Euterpe_X.ipynb

{
  "cells": [
    {
      "cell_type": "markdown",
      "source": [
        "# Euterpe X (ver. 5.0)\n",
        "\n",
        "***\n",
        "\n",
        "Powered by tegridy-tools: https://github.com/asigalov61/tegridy-tools\n",
        "\n",
        "***\n",
        "\n",
        "WARNING: This complete implementation is a functioning model of the Artificial Intelligence. Please excercise great humility, care, and respect. https://www.nscai.gov/\n",
        "\n",
        "***\n",
        "\n",
        "#### Project Los Angeles\n",
        "\n",
        "#### Tegridy Code 2023\n",
        "\n",
        "***"
      ],
      "metadata": {
        "id": "gpy3qsulqHa5"
      }
    },
    {
      "cell_type": "markdown",
      "source": [
        "# (GPU CHECK)"
      ],
      "metadata": {
        "id": "W_So4w8fqPGL"
      }
    },
    {
      "cell_type": "code",
      "execution_count": null,
      "metadata": {
        "id": "X3rABEpKCO02",
        "cellView": "form"
      },
      "outputs": [],
      "source": [
        "#@title NVIDIA GPU check\n",
        "!nvidia-smi"
      ]
    },
    {
      "cell_type": "markdown",
      "source": [
        "# (SETUP ENVIRONMENT)"
      ],
      "metadata": {
        "id": "C0XxnXGFqVyh"
      }
    },
    {
      "cell_type": "code",
      "execution_count": null,
      "metadata": {
        "id": "vK40g6V_BTNj",
        "cellView": "form"
      },
      "outputs": [],
      "source": [
        "#@title Install dependencies\n",
        "!git clone --depth 1 https://github.com/asigalov61/Euterpe-X\n",
        "!pip install huggingface_hub\n",
        "!pip install torch\n",
        "!pip install einops\n",
        "!pip install torch-summary\n",
        "!pip install tqdm\n",
        "!pip install matplotlib\n",
        "!apt install fluidsynth #Pip does not work for some reason. Only apt works\n",
        "!pip install midi2audio"
      ]
    },
    {
      "cell_type": "code",
      "execution_count": null,
      "metadata": {
        "id": "DzCOZU_gBiQV",
        "cellView": "form"
      },
      "outputs": [],
      "source": [
        "#@title Import modules\n",
        "\n",
        "print('=' * 70)\n",
        "print('Loading core Euterpe X modules...')\n",
        "\n",
        "import os\n",
        "import pickle\n",
        "import random\n",
        "import secrets\n",
        "import statistics\n",
        "from time import time\n",
        "import tqdm\n",
        "\n",
        "print('=' * 70)\n",
        "print('Loading main Euterpe X modules...')\n",
        "import torch\n",
        "\n",
        "%cd /content/Euterpe-X\n",
        "\n",
        "import TMIDIX\n",
        "from x_transformer import *\n",
        "\n",
        "%cd /content/\n",
        "print('=' * 70)\n",
        "print('Loading aux Euterpe X modules...')\n",
        "\n",
        "import matplotlib.pyplot as plt\n",
        "\n",
        "from torchsummary import summary\n",
        "from sklearn import metrics\n",
        "\n",
        "from midi2audio import FluidSynth\n",
        "from IPython.display import Audio, display\n",
        "\n",
        "from huggingface_hub import hf_hub_download\n",
        "\n",
        "from google.colab import files\n",
        "\n",
        "print('=' * 70)\n",
        "print('Done!')\n",
        "print('Enjoy! :)')\n",
        "print('=' * 70)"
      ]
    },
    {
      "cell_type": "markdown",
      "metadata": {
        "id": "eI3aQtHzqSnp"
      },
      "source": [
        "# (LOAD MODEL)\n",
        "\n",
        "## NOTE: Choose one and do not forget to restart colab runtime if you are switching between models"
      ]
    },
    {
      "cell_type": "code",
      "execution_count": null,
      "metadata": {
        "id": "rDquonbXC2je",
        "cellView": "form"
      },
      "outputs": [],
      "source": [
        "#@title Load Euterpe X Small Model\n",
        "\n",
        "#@markdown Fast model, 32 layers, 141k MIDIs training corpus\n",
        "\n",
        "full_path_to_model_checkpoint = \"/content/Euterpe-X/Models/Small/Euterpe_X_Small_Trained_Model_58000_steps_0.6865_loss_0.7964_acc.pth\" #@param {type:\"string\"}\n",
        "\n",
        "#@markdown Model precision option\n",
        "\n",
        "model_precision = \"bfloat16\" # @param [\"bfloat16\", \"float16\", \"float32\"]\n",
        "\n",
        "#@markdown bfloat16 == Third precision/triple speed (if supported, otherwise the model will default to float16)\n",
        "\n",
        "#@markdown float16 == Half precision/double speed\n",
        "\n",
        "#@markdown float32 == Full precision/normal speed\n",
        "\n",
        "plot_tokens_embeddings = True # @param {type:\"boolean\"}\n",
        "\n",
        "print('=' * 70)\n",
        "print('Loading Euterpe X Small Pre-Trained Model...')\n",
        "print('Please wait...')\n",
        "print('=' * 70)\n",
        "\n",
        "if os.path.isfile(full_path_to_model_checkpoint):\n",
        "  print('Model already exists...')\n",
        "\n",
        "else:\n",
        "  hf_hub_download(repo_id='asigalov61/Euterpe-X',\n",
        "                  filename='Euterpe_X_Small_Trained_Model_58000_steps_0.6865_loss_0.7964_acc.pth',\n",
        "                  local_dir='/content/Euterpe-X/Models/Small/',\n",
        "                  local_dir_use_symlinks=False)\n",
        "print('=' * 70)\n",
        "print('Instantiating model...')\n",
        "\n",
        "torch.backends.cuda.matmul.allow_tf32 = True # allow tf32 on matmul\n",
        "torch.backends.cudnn.allow_tf32 = True # allow tf32 on cudnn\n",
        "device_type = 'cuda'\n",
        "\n",
        "if model_precision == 'bfloat16' and torch.cuda.is_bf16_supported():\n",
        "  dtype = 'bfloat16'\n",
        "else:\n",
        "  dtype = 'float16'\n",
        "\n",
        "if model_precision == 'float16':\n",
        "  dtype = 'float16'\n",
        "\n",
        "if model_precision == 'float32':\n",
        "  dtype = 'float32'\n",
        "\n",
        "ptdtype = {'float32': torch.float32, 'bfloat16': torch.bfloat16, 'float16': torch.float16}[dtype]\n",
        "ctx = torch.amp.autocast(device_type=device_type, dtype=ptdtype)\n",
        "\n",
        "SEQ_LEN = 2048\n",
        "\n",
        "# instantiate the model\n",
        "\n",
        "model = TransformerWrapper(\n",
        "    num_tokens = 3344,\n",
        "    max_seq_len = SEQ_LEN,\n",
        "    attn_layers = Decoder(dim = 1024, depth = 32, heads = 8, attn_flash=True)\n",
        ")\n",
        "\n",
        "model = AutoregressiveWrapper(model)\n",
        "\n",
        "model = torch.nn.DataParallel(model)\n",
        "\n",
        "model.cuda()\n",
        "print('=' * 70)\n",
        "\n",
        "print('Loading model checkpoint...')\n",
        "\n",
        "model.load_state_dict(torch.load(full_path_to_model_checkpoint))\n",
        "print('=' * 70)\n",
        "\n",
        "model.eval()\n",
        "\n",
        "print('Done!')\n",
        "print('=' * 70)\n",
        "\n",
        "print('Model will use', dtype, 'precision...')\n",
        "print('=' * 70)\n",
        "\n",
        "# Model stats\n",
        "print('Model summary...')\n",
        "summary(model)\n",
        "\n",
        "# Plot Token Embeddings\n",
        "if plot_tokens_embeddings:\n",
        "  tok_emb = model.module.net.token_emb.emb.weight.detach().cpu().tolist()\n",
        "\n",
        "  cos_sim = metrics.pairwise_distances(\n",
        "    tok_emb, metric='cosine'\n",
        "  )\n",
        "  plt.figure(figsize=(7, 7))\n",
        "  plt.imshow(cos_sim, cmap=\"inferno\", interpolation=\"nearest\")\n",
        "  im_ratio = cos_sim.shape[0] / cos_sim.shape[1]\n",
        "  plt.colorbar(fraction=0.046 * im_ratio, pad=0.04)\n",
        "  plt.xlabel(\"Position\")\n",
        "  plt.ylabel(\"Position\")\n",
        "  plt.tight_layout()\n",
        "  plt.plot()\n",
        "  plt.savefig(\"/content/Euterpe-X-Small-Tokens-Embeddings-Plot.png\", bbox_inches=\"tight\")"
      ]
    },
    {
      "cell_type": "code",
      "source": [
        "#@title Load Euterpe X Large Model\n",
        "\n",
        "#@markdown Slow model, 60 layers, 314k MIDIs training corpus\n",
        "\n",
        "full_path_to_model_checkpoint = \"/content/Euterpe-X/Models/Large/Euterpe_X_Large_Trained_Model_100000_steps_0.477_loss_0.8533_acc.pth\" #@param {type:\"string\"}\n",
        "\n",
        "#@markdown Model precision option\n",
        "\n",
        "model_precision = \"bfloat16\" # @param [\"bfloat16\", \"float16\", \"float32\"]\n",
        "\n",
        "#@markdown bfloat16 == Third precision/triple speed (if supported, otherwise the model will default to float16)\n",
        "\n",
        "#@markdown float16 == Half precision/double speed\n",
        "\n",
        "#@markdown float32 == Full precision/normal speed\n",
        "\n",
        "plot_tokens_embeddings = True # @param {type:\"boolean\"}\n",
        "\n",
        "print('=' * 70)\n",
        "print('Loading Euterpe X Large Pre-Trained Model...')\n",
        "print('Please wait...')\n",
        "print('=' * 70)\n",
        "\n",
        "if os.path.isfile(full_path_to_model_checkpoint):\n",
        "  print('Model already exists...')\n",
        "\n",
        "else:\n",
        "  hf_hub_download(repo_id='asigalov61/Euterpe-X',\n",
        "                  filename='Euterpe_X_Large_Trained_Model_100000_steps_0.477_loss_0.8533_acc.pth',\n",
        "                  local_dir='/content/Euterpe-X/Models/Large',\n",
        "                  local_dir_use_symlinks=False)\n",
        "\n",
        "print('=' * 70)\n",
        "print('Instantiating model...')\n",
        "\n",
        "torch.backends.cuda.matmul.allow_tf32 = True # allow tf32 on matmul\n",
        "torch.backends.cudnn.allow_tf32 = True # allow tf32 on cudnn\n",
        "device_type = 'cuda'\n",
        "\n",
        "if model_precision == 'bfloat16' and torch.cuda.is_bf16_supported():\n",
        "  dtype = 'bfloat16'\n",
        "else:\n",
        "  dtype = 'float16'\n",
        "\n",
        "if model_precision == 'float16':\n",
        "  dtype = 'float16'\n",
        "\n",
        "if model_precision == 'float32':\n",
        "  dtype = 'float32'\n",
        "\n",
        "ptdtype = {'float32': torch.float32, 'bfloat16': torch.bfloat16, 'float16': torch.float16}[dtype]\n",
        "ctx = torch.amp.autocast(device_type=device_type, dtype=ptdtype)\n",
        "\n",
        "SEQ_LEN = 2048\n",
        "\n",
        "# instantiate the model\n",
        "\n",
        "model = TransformerWrapper(\n",
        "    num_tokens = 3344,\n",
        "    max_seq_len = SEQ_LEN,\n",
        "    attn_layers = Decoder(dim = 1024, depth = 60, heads = 8, attn_flash=True)\n",
        ")\n",
        "\n",
        "model = AutoregressiveWrapper(model)\n",
        "\n",
        "model = torch.nn.DataParallel(model)\n",
        "\n",
        "model.cuda()\n",
        "print('=' * 70)\n",
        "\n",
        "print('Loading model checkpoint...')\n",
        "\n",
        "model.load_state_dict(torch.load(full_path_to_model_checkpoint))\n",
        "print('=' * 70)\n",
        "\n",
        "model.eval()\n",
        "\n",
        "print('Done!')\n",
        "print('=' * 70)\n",
        "\n",
        "print('Model will use', dtype, 'precision...')\n",
        "print('=' * 70)\n",
        "\n",
        "# Model stats\n",
        "print('Model summary...')\n",
        "summary(model)\n",
        "\n",
        "# Plot Token Embeddings\n",
        "if plot_tokens_embeddings:\n",
        "  tok_emb = model.module.net.token_emb.emb.weight.detach().cpu().tolist()\n",
        "\n",
        "  cos_sim = metrics.pairwise_distances(\n",
        "    tok_emb, metric='cosine'\n",
        "  )\n",
        "  plt.figure(figsize=(7, 7))\n",
        "  plt.imshow(cos_sim, cmap=\"inferno\", interpolation=\"nearest\")\n",
        "  im_ratio = cos_sim.shape[0] / cos_sim.shape[1]\n",
        "  plt.colorbar(fraction=0.046 * im_ratio, pad=0.04)\n",
        "  plt.xlabel(\"Position\")\n",
        "  plt.ylabel(\"Position\")\n",
        "  plt.tight_layout()\n",
        "  plt.plot()\n",
        "  plt.savefig(\"/content/Euterpe-X-Large-Tokens-Embeddings-Plot.png\", bbox_inches=\"tight\")"
      ],
      "metadata": {
        "cellView": "form",
        "id": "V4s_G8yUL0cH"
      },
      "execution_count": null,
      "outputs": []
    },
    {
      "cell_type": "markdown",
      "source": [
        "# (LOAD VELOCITIES MAP)"
      ],
      "metadata": {
        "id": "NQflmu8GNAhQ"
      }
    },
    {
      "cell_type": "code",
      "source": [
        "# @title Load velocities map\n",
        "\n",
        "#@markdown Select velocity type to apply to the generated output\n",
        "\n",
        "velocity_type_to_use = \"Velocity Map\" # @param [\"Constant Velocity\", \"Velocity Map\"]\n",
        "\n",
        "plot_velocities_map = True # @param {type:\"boolean\"}\n",
        "\n",
        "print('=' * 70)\n",
        "print('Loading Euterpe X Velocities Map...')\n",
        "print('=' * 70)\n",
        "\n",
        "instruments_patches = [0, 24, 32, 40, 42, 46, 56, 65, 73, 0, 53, 19, 0, 0, 0, 0]\n",
        "\n",
        "dynamic_velocities_map = TMIDIX.Tegridy_Any_Pickle_File_Reader('/content/Euterpe-X/Aux-Data/pitches_patches_MIDI_velocities_map')[0]\n",
        "\n",
        "print('=' * 70)\n",
        "print('Done!')\n",
        "print('=' * 70)\n",
        "\n",
        "if plot_velocities_map:\n",
        "  cos_sim = metrics.pairwise_distances(\n",
        "    dynamic_velocities_map, metric='cosine'\n",
        "  )\n",
        "  plt.figure(figsize=(7, 7))\n",
        "  plt.imshow(cos_sim, cmap=\"inferno\", interpolation=\"nearest\")\n",
        "  im_ratio = cos_sim.shape[0] / cos_sim.shape[1]\n",
        "  plt.colorbar(fraction=0.046 * im_ratio, pad=0.04)\n",
        "  plt.xlabel(\"Pitches\")\n",
        "  plt.ylabel(\"Patches\")\n",
        "  plt.tight_layout()\n",
        "  plt.plot()\n",
        "  plt.savefig(\"/content/Euterpe-X-Velocities-Map-Plot.png\", bbox_inches=\"tight\")"
      ],
      "metadata": {
        "cellView": "form",
        "id": "hw7gJGp0NFE8"
      },
      "execution_count": null,
      "outputs": []
    },
    {
      "cell_type": "markdown",
      "source": [
        "# (GENERATE)"
      ],
      "metadata": {
        "id": "7xNyANjZsCOi"
      }
    },
    {
      "cell_type": "markdown",
      "source": [
        "# (IMPROV)"
      ],
      "metadata": {
        "id": "BxepTeHVmmKO"
      }
    },
    {
      "cell_type": "code",
      "source": [
        "#@title Standard Improv Generator\n",
        "\n",
        "#@markdown Improv settings\n",
        "\n",
        "first_note_instrument = \"Piano\" #@param [\"Piano\", \"Guitar\", \"Bass\", \"Violin\", \"Cello\", \"Harp\", \"Trumpet\", \"Sax\", \"Flute\", \"Choir\", \"Organ\"]\n",
        "add_drums = False #@param {type:\"boolean\"}\n",
        "\n",
        "#@markdown Generation settings\n",
        "\n",
        "number_of_tokens_tp_generate = 300 #@param {type:\"slider\", min:30, max:2046, step:30}\n",
        "number_of_batches_to_generate = 4 #@param {type:\"slider\", min:1, max:16, step:1}\n",
        "temperature = 0.9 #@param {type:\"slider\", min:0.1, max:1, step:0.1}\n",
        "\n",
        "#@markdown Other settings\n",
        "\n",
        "render_MIDI_to_audio = True # @param {type:\"boolean\"}\n",
        "\n",
        "print('=' * 70)\n",
        "print('Euterpe X Standard Improv Model Generator')\n",
        "print('=' * 70)\n",
        "\n",
        "velocities_map = [80, 80, 70, 100, 90, 80, 100, 100, 100, 90, 110, 100]\n",
        "\n",
        "if add_drums:\n",
        "  drumsp = 3330 # Yes\n",
        "else:\n",
        "  drumsp = 3329 # No\n",
        "\n",
        "instruments_list = [\"Piano\", \"Guitar\", \"Bass\", \"Violin\", \"Cello\", \"Harp\", \"Trumpet\", \"Sax\", \"Flute\", 'Drums', \"Choir\", \"Organ\"]\n",
        "first_note_instrument_number = instruments_list.index(first_note_instrument)\n",
        "\n",
        "outy = [3343, drumsp, 3331+first_note_instrument_number]\n",
        "\n",
        "print('Selected Improv sequence:')\n",
        "print(outy)\n",
        "print('=' * 70)\n",
        "\n",
        "inp = [outy] * number_of_batches_to_generate\n",
        "\n",
        "inp = torch.LongTensor(inp).cuda()\n",
        "\n",
        "with ctx:\n",
        "  out = model.module.generate(inp,\n",
        "                        number_of_tokens_tp_generate,\n",
        "                        temperature=temperature,\n",
        "                        return_prime=True,\n",
        "                        verbose=True)\n",
        "\n",
        "out0 = out.tolist()\n",
        "\n",
        "print('=' * 70)\n",
        "print('Done!')\n",
        "print('=' * 70)\n",
        "\n",
        "#======================================================================\n",
        "\n",
        "print('Rendering results...')\n",
        "\n",
        "for i in range(number_of_batches_to_generate):\n",
        "\n",
        "  print('=' * 70)\n",
        "  print('Batch #', i)\n",
        "  print('=' * 70)\n",
        "\n",
        "  out1 = out0[i]\n",
        "\n",
        "  print('Sample INTs', out1[:12])\n",
        "  print('=' * 70)\n",
        "\n",
        "  if len(out1) != 0:\n",
        "\n",
        "      song = out1\n",
        "      song_f = []\n",
        "\n",
        "      time = 0\n",
        "      dur = 0\n",
        "      channel = 0\n",
        "      pitch = 0\n",
        "      vel = 90\n",
        "\n",
        "      for ss in song:\n",
        "\n",
        "        if ss > 0 and ss < 256:\n",
        "\n",
        "            time += ss * 8\n",
        "\n",
        "        if ss >= 256 and ss < 256+(12*128):\n",
        "\n",
        "            dur = ((ss-256) % 128) * 30\n",
        "\n",
        "        if ss >= 256+(12*128) and ss < 256+(12*128)+(12*128):\n",
        "            channel = (ss-(256+(12*128))) // 128\n",
        "            pitch = (ss-(256+(12*128))) % 128\n",
        "\n",
        "            if velocity_type_to_use == 'Constant Velocity':\n",
        "              vel = velocities_map[channel]\n",
        "            else:\n",
        "              vel = round(dynamic_velocities_map[pitch][instruments_patches[channel]])\n",
        "\n",
        "            song_f.append(['note', time, dur, channel, pitch, vel ])\n",
        "\n",
        "      detailed_stats = TMIDIX.Tegridy_ms_SONG_to_MIDI_Converter(song_f,\n",
        "                                                                output_signature = 'Euterpe X',\n",
        "                                                                output_file_name = '/content/Euterpe-X-Music-Composition_'+str(i),\n",
        "                                                                track_name='Project Los Angeles',\n",
        "                                                                list_of_MIDI_patches=[0, 24, 32, 40, 42, 46, 56, 65, 73, 0, 53, 19, 0, 0, 0, 0]\n",
        "                                                                )\n",
        "\n",
        "\n",
        "      print('=' * 70)\n",
        "      print('Displaying resulting composition...')\n",
        "      print('=' * 70)\n",
        "\n",
        "      fname = '/content/Euterpe-X-Music-Composition_'+str(i)\n",
        "\n",
        "      x = []\n",
        "      y =[]\n",
        "      c = []\n",
        "\n",
        "      colors = ['red', 'yellow', 'green', 'cyan', 'blue', 'pink', 'orange', 'purple', 'gray', 'white', 'gold', 'silver']\n",
        "\n",
        "      for s in song_f:\n",
        "        x.append(s[1] / 1000)\n",
        "        y.append(s[4])\n",
        "        c.append(colors[s[3]])\n",
        "\n",
        "      if render_MIDI_to_audio:\n",
        "        FluidSynth(\"/usr/share/sounds/sf2/FluidR3_GM.sf2\", 16000).midi_to_audio(str(fname + '.mid'), str(fname + '.wav'))\n",
        "        display(Audio(str(fname + '.wav'), rate=16000))\n",
        "\n",
        "      plt.figure(figsize=(14,5))\n",
        "      ax=plt.axes(title=fname)\n",
        "      ax.set_facecolor('black')\n",
        "\n",
        "      plt.scatter(x,y, c=c)\n",
        "      plt.xlabel(\"Time\")\n",
        "      plt.ylabel(\"Pitch\")\n",
        "      plt.show()"
      ],
      "metadata": {
        "cellView": "form",
        "id": "Jwxz-eaF0K1y"
      },
      "execution_count": null,
      "outputs": []
    },
    {
      "cell_type": "markdown",
      "source": [
        "# (CUSTOM MIDI)"
      ],
      "metadata": {
        "id": "Gt03VtO6uKkb"
      }
    },
    {
      "cell_type": "code",
      "execution_count": null,
      "metadata": {
        "id": "4QXbFLsKqSnt",
        "cellView": "form"
      },
      "outputs": [],
      "source": [
        "#@title Load Seed MIDI\n",
        "\n",
        "#@markdown Press play button to to upload your own seed MIDI or to load one of the provided sample seed MIDIs from the dropdown list below\n",
        "\n",
        "select_seed_MIDI = \"Upload your own custom MIDI\" # @param [\"Upload your own custom MIDI\", \"Euterpe-X-Piano-Seed-1\", \"Euterpe-X-Piano-Seed-2\", \"Euterpe-X-Piano-Seed-3\", \"Euterpe-X-Piano-Seed-4\", \"Euterpe-X-Piano-Seed-5\", \"Euterpe-X-MI-Seed-1\", \"Euterpe-X-MI-Seed-2\", \"Euterpe-X-MI-Seed-3\", \"Euterpe-X-MI-Seed-4\", \"Euterpe-X-MI-Seed-5\"]\n",
        "render_MIDI_to_audio = False # @param {type:\"boolean\"}\n",
        "\n",
        "print('=' * 70)\n",
        "print('Euterpe X Seed MIDI Loader')\n",
        "print('=' * 70)\n",
        "\n",
        "f = ''\n",
        "\n",
        "if select_seed_MIDI != \"Upload your own custom MIDI\":\n",
        "  print('Loading seed MIDI...')\n",
        "  f = '/content/Euterpe-X/Seeds/'+select_seed_MIDI+'.mid'\n",
        "  score = TMIDIX.midi2single_track_ms_score(open(f, 'rb').read(), recalculate_channels=False)\n",
        "\n",
        "else:\n",
        "  print('Upload your own custom MIDI...')\n",
        "  print('=' * 70)\n",
        "  uploaded_MIDI = files.upload()\n",
        "  if list(uploaded_MIDI.keys()):\n",
        "    score = TMIDIX.midi2single_track_ms_score(list(uploaded_MIDI.values())[0], recalculate_channels=False)\n",
        "    f = list(uploaded_MIDI.keys())[0]\n",
        "\n",
        "if f != '':\n",
        "\n",
        "  print('=' * 70)\n",
        "  print('File:', f)\n",
        "  print('=' * 70)\n",
        "\n",
        "  #=======================================================\n",
        "  # START PROCESSING\n",
        "\n",
        "  # INSTRUMENTS CONVERSION CYCLE\n",
        "  events_matrix = []\n",
        "  melody_chords_f = []\n",
        "  melody_chords_f1 = []\n",
        "\n",
        "  itrack = 1\n",
        "\n",
        "  patches = [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0]\n",
        "\n",
        "  patch_map = [\n",
        "              [0, 1, 2, 3, 4, 5, 6, 7], # Piano\n",
        "              [24, 25, 26, 27, 28, 29, 30], # Guitar\n",
        "              [32, 33, 34, 35, 36, 37, 38, 39], # Bass\n",
        "              [40, 41], # Violin\n",
        "              [42, 43], # Cello\n",
        "              [46], # Harp\n",
        "              [56, 57, 58, 59, 60], # Trumpet\n",
        "              [64, 65, 66, 67, 68, 69, 70, 71], # Sax\n",
        "              [72, 73, 74, 75, 76, 77, 78], # Flute\n",
        "              [-1], # Drums\n",
        "              [52, 53], # Choir\n",
        "              [16, 17, 18, 19, 20] # Organ\n",
        "              ]\n",
        "\n",
        "  while itrack < len(score):\n",
        "    for event in score[itrack]:\n",
        "        if event[0] == 'note' or event[0] == 'patch_change':\n",
        "            events_matrix.append(event)\n",
        "    itrack += 1\n",
        "\n",
        "  events_matrix.sort(key=lambda x: x[1])\n",
        "\n",
        "  events_matrix1 = []\n",
        "\n",
        "  for event in events_matrix:\n",
        "    if event[0] == 'patch_change':\n",
        "        patches[event[2]] = event[3]\n",
        "\n",
        "    if event[0] == 'note':\n",
        "        event.extend([patches[event[3]]])\n",
        "        once = False\n",
        "\n",
        "        for p in patch_map:\n",
        "            if event[6] in p and event[3] != 9: # Except the drums\n",
        "                event[3] = patch_map.index(p)\n",
        "                once = True\n",
        "\n",
        "        if not once and event[3] != 9: # Except the drums\n",
        "            event[3] = 15 # All other instruments/patches channel\n",
        "            event[5] = max(80, event[5])\n",
        "\n",
        "        if event[3] < 12: # We won't write chans 12-16 for now...\n",
        "            events_matrix1.append(event)\n",
        "\n",
        "  #=======================================================\n",
        "  # PRE-PROCESSING\n",
        "\n",
        "  # checking number of instruments in a composition\n",
        "  instruments_list_without_drums = list(set([y[3] for y in events_matrix1 if y[3] != 9]))\n",
        "\n",
        "  if len(events_matrix1) > 0 and len(instruments_list_without_drums) > 0:\n",
        "\n",
        "    # recalculating timings\n",
        "    for e in events_matrix1:\n",
        "        e[1] = int(e[1] / 8) # Max 1 seconds for start-times\n",
        "        e[2] = int(e[2] / 30) # Max 2 seconds for durations\n",
        "\n",
        "    # Sorting by pitch, then by start-time\n",
        "    events_matrix1.sort(key=lambda x: x[4], reverse=True)\n",
        "    events_matrix1.sort(key=lambda x: x[1])\n",
        "\n",
        "    #=======================================================\n",
        "    # FINAL PRE-PROCESSING\n",
        "\n",
        "    melody_chords = []\n",
        "\n",
        "    pe = events_matrix1[0]\n",
        "\n",
        "    for e in events_matrix1:\n",
        "      if e[1] >= 0 and e[2] >= 0:\n",
        "\n",
        "        # Cliping all values...\n",
        "        tim = max(0, min(255, e[1]-pe[1]))\n",
        "        dur = max(1, min(127, e[2]))\n",
        "        cha = max(0, min(11, e[3]))\n",
        "        ptc = max(1, min(127, e[4]))\n",
        "        vel = max(1, min(127, e[5]))\n",
        "\n",
        "        # Writing final note\n",
        "        melody_chords.append([tim, dur, cha, ptc, vel])\n",
        "\n",
        "        pe = e\n",
        "\n",
        "  #=======================================================\n",
        "  # Velocities map\n",
        "  #=======================================================\n",
        "\n",
        "  # Default fixed velocities for each channel/instrument\n",
        "  velocities_map = [80, 80, 70, 100, 90, 80, 100, 100, 100, 90, 110, 100]\n",
        "\n",
        "  # Extracting velocities from the MIDI file\n",
        "  for i in range(12):\n",
        "    vels = [m[4] for m in melody_chords if m[2] == i]\n",
        "\n",
        "    avg_vel = 0\n",
        "\n",
        "    if len(vels) > 0:\n",
        "      avg_vel = int(sum(vels) / len(vels))\n",
        "\n",
        "    if avg_vel > 20:\n",
        "      velocities_map[i] = avg_vel\n",
        "\n",
        "  #=======================================================\n",
        "  # MAIN PROCESSING CYCLE\n",
        "  #=======================================================\n",
        "\n",
        "  for m in melody_chords:\n",
        "\n",
        "    # WRITING EACH NOTE HERE\n",
        "    time = m[0]\n",
        "    cha_dur = (m[2] * 128) + m[1]\n",
        "    cha_ptc = (m[2] * 128) + m[3]\n",
        "\n",
        "    melody_chords_f.extend([time, cha_dur+256, cha_ptc+1792])\n",
        "    melody_chords_f1.append([time, cha_dur+256, cha_ptc+1792])\n",
        "\n",
        "  #=======================================================\n",
        "\n",
        "  song = melody_chords_f\n",
        "\n",
        "  song_f = []\n",
        "\n",
        "  time = 0\n",
        "  dur = 0\n",
        "  channel = 0\n",
        "  pitch = 0\n",
        "  vel = 90\n",
        "\n",
        "  for ss in song:\n",
        "\n",
        "    if ss > 0 and ss < 256:\n",
        "\n",
        "        time += ss * 8\n",
        "\n",
        "    if ss >= 256 and ss < 256+(12*128):\n",
        "\n",
        "        dur = ((ss-256) % 128) * 30\n",
        "\n",
        "    if ss >= 256+(12*128) and ss < 256+(12*128)+(12*128):\n",
        "        channel = (ss-(256+(12*128))) // 128\n",
        "        pitch = (ss-(256+(12*128))) % 128\n",
        "\n",
        "        if velocity_type_to_use == 'Constant Velocity':\n",
        "          vel = velocities_map[channel]\n",
        "        else:\n",
        "          vel = round(dynamic_velocities_map[pitch][instruments_patches[channel]])\n",
        "\n",
        "        song_f.append(['note', time, dur, channel, pitch, vel ])\n",
        "\n",
        "  detailed_stats = TMIDIX.Tegridy_ms_SONG_to_MIDI_Converter(song_f,\n",
        "                                                            output_signature = 'Euterpe X',\n",
        "                                                            output_file_name = '/content/Euterpe-X-Seed-Composition',\n",
        "                                                            track_name='Project Los Angeles',\n",
        "                                                            list_of_MIDI_patches=[0, 24, 32, 40, 42, 46, 56, 65, 73, 0, 53, 19, 0, 0, 0, 0]\n",
        "                                                            )\n",
        "\n",
        "  #=======================================================\n",
        "\n",
        "  print('=' * 70)\n",
        "  print('Composition stats:')\n",
        "  print('Composition has', len(melody_chords_f1), 'notes')\n",
        "  print('Composition has', len(melody_chords_f), 'tokens')\n",
        "  print('=' * 70)\n",
        "\n",
        "  print('Displaying resulting composition...')\n",
        "  print('=' * 70)\n",
        "\n",
        "  fname = '/content/Euterpe-X-Seed-Composition'\n",
        "\n",
        "  x = []\n",
        "  y =[]\n",
        "  c = []\n",
        "\n",
        "  colors = ['red', 'yellow', 'green', 'cyan', 'blue', 'pink', 'orange', 'purple', 'gray', 'white', 'gold', 'silver']\n",
        "\n",
        "  for s in song_f:\n",
        "    x.append(s[1] / 1000)\n",
        "    y.append(s[4])\n",
        "    c.append(colors[s[3]])\n",
        "\n",
        "  if render_MIDI_to_audio:\n",
        "    FluidSynth(\"/usr/share/sounds/sf2/FluidR3_GM.sf2\", 16000).midi_to_audio(str(fname + '.mid'), str(fname + '.wav'))\n",
        "    display(Audio(str(fname + '.wav'), rate=16000))\n",
        "\n",
        "  plt.figure(figsize=(14,5))\n",
        "  ax=plt.axes(title=fname)\n",
        "  ax.set_facecolor('black')\n",
        "\n",
        "  plt.scatter(x,y, c=c)\n",
        "  plt.xlabel(\"Time\")\n",
        "  plt.ylabel(\"Pitch\")\n",
        "  plt.show()\n",
        "\n",
        "else:\n",
        "  print('=' * 70)"
      ]
    },
    {
      "cell_type": "markdown",
      "source": [
        "# (CONTINUATION)"
      ],
      "metadata": {
        "id": "fmm3KjOtoVp9"
      }
    },
    {
      "cell_type": "code",
      "execution_count": null,
      "metadata": {
        "id": "dkvXYwR_qSnx",
        "cellView": "form"
      },
      "outputs": [],
      "source": [
        "#@title Standard Continuation\n",
        "\n",
        "#@markdown Generation settings\n",
        "\n",
        "try_to_generate_outro = False #@param {type:\"boolean\"}\n",
        "number_of_prime_tokens = 300 #@param {type:\"slider\", min:3, max:2046, step:3}\n",
        "number_of_tokens_to_generate = 300 #@param {type:\"slider\", min:30, max:2046, step:30}\n",
        "number_of_batches_to_generate = 4 #@param {type:\"slider\", min:1, max:16, step:1}\n",
        "temperature = 0.9 #@param {type:\"slider\", min:0.1, max:1, step:0.1}\n",
        "\n",
        "#@markdown Other settings\n",
        "include_prime_tokens_in_generated_output = True #@param {type:\"boolean\"}\n",
        "allow_model_to_stop_generation_if_needed = False #@param {type:\"boolean\"}\n",
        "render_MIDI_to_audio = True # @param {type:\"boolean\"}\n",
        "\n",
        "print('=' * 70)\n",
        "print('Euterpe X Standard Continuation Model Generator')\n",
        "print('=' * 70)\n",
        "\n",
        "if allow_model_to_stop_generation_if_needed:\n",
        "  min_stop_token = 3343\n",
        "else:\n",
        "  min_stop_token = None\n",
        "\n",
        "outy = melody_chords_f[:number_of_prime_tokens]\n",
        "\n",
        "if try_to_generate_outro:\n",
        "  outy.extend([3328, 3328, 3328])\n",
        "\n",
        "inp = [outy] * number_of_batches_to_generate\n",
        "\n",
        "inp = torch.LongTensor(inp).cuda()\n",
        "\n",
        "with ctx:\n",
        "  out = model.module.generate(inp,\n",
        "                        number_of_tokens_to_generate,\n",
        "                        temperature=temperature,\n",
        "                        return_prime=include_prime_tokens_in_generated_output,\n",
        "                        eos_token=min_stop_token,\n",
        "                        verbose=True)\n",
        "\n",
        "out0 = out.tolist()\n",
        "\n",
        "print('=' * 70)\n",
        "print('Done!')\n",
        "print('=' * 70)\n",
        "\n",
        "#======================================================================\n",
        "print('Rendering results...')\n",
        "\n",
        "for i in range(number_of_batches_to_generate):\n",
        "\n",
        "  print('=' * 70)\n",
        "  print('Batch #', i)\n",
        "  print('=' * 70)\n",
        "\n",
        "  out1 = out0[i]\n",
        "\n",
        "  print('Sample INTs', out1[:12])\n",
        "  print('=' * 70)\n",
        "\n",
        "  if len(out) != 0:\n",
        "\n",
        "      song = out1\n",
        "      song_f = []\n",
        "\n",
        "      time = 0\n",
        "      dur = 0\n",
        "      channel = 0\n",
        "      pitch = 0\n",
        "      vel = 90\n",
        "\n",
        "      for ss in song:\n",
        "\n",
        "        if ss > 0 and ss < 256:\n",
        "\n",
        "            time += ss * 8\n",
        "\n",
        "        if ss >= 256 and ss < 256+(12*128):\n",
        "\n",
        "            dur = ((ss-256) % 128) * 30\n",
        "\n",
        "        if ss >= 256+(12*128) and ss < 256+(12*128)+(12*128):\n",
        "            channel = (ss-(256+(12*128))) // 128\n",
        "            pitch = (ss-(256+(12*128))) % 128\n",
        "\n",
        "            if velocity_type_to_use == 'Constant Velocity':\n",
        "              vel = velocities_map[channel]\n",
        "            else:\n",
        "              vel = round(dynamic_velocities_map[pitch][instruments_patches[channel]])\n",
        "\n",
        "            song_f.append(['note', time, dur, channel, pitch, vel ])\n",
        "\n",
        "      detailed_stats = TMIDIX.Tegridy_ms_SONG_to_MIDI_Converter(song_f,\n",
        "                                                                output_signature = 'Euterpe X',\n",
        "                                                                output_file_name = '/content/Euterpe-X-Music-Composition_'+str(i),\n",
        "                                                                track_name='Project Los Angeles',\n",
        "                                                                list_of_MIDI_patches=[0, 24, 32, 40, 42, 46, 56, 65, 73, 0, 53, 19, 0, 0, 0, 0]\n",
        "                                                                )\n",
        "      print('=' * 70)\n",
        "      print('Displaying resulting composition...')\n",
        "      print('=' * 70)\n",
        "\n",
        "      fname = '/content/Euterpe-X-Music-Composition_'+str(i)\n",
        "\n",
        "      x = []\n",
        "      y =[]\n",
        "      c = []\n",
        "\n",
        "      colors = ['red', 'yellow', 'green', 'cyan', 'blue', 'pink', 'orange', 'purple', 'gray', 'white', 'gold', 'silver']\n",
        "\n",
        "      for s in song_f:\n",
        "        x.append(s[1] / 1000)\n",
        "        y.append(s[4])\n",
        "        c.append(colors[s[3]])\n",
        "\n",
        "      if render_MIDI_to_audio:\n",
        "        FluidSynth(\"/usr/share/sounds/sf2/FluidR3_GM.sf2\", 16000).midi_to_audio(str(fname + '.mid'), str(fname + '.wav'))\n",
        "        display(Audio(str(fname + '.wav'), rate=16000))\n",
        "\n",
        "      plt.figure(figsize=(14,5))\n",
        "      ax=plt.axes(title=fname)\n",
        "      ax.set_facecolor('black')\n",
        "\n",
        "      plt.scatter(x,y, c=c)\n",
        "      plt.xlabel(\"Time\")\n",
        "      plt.ylabel(\"Pitch\")\n",
        "      plt.show()"
      ]
    },
    {
      "cell_type": "markdown",
      "source": [
        "# (INPAINTING)"
      ],
      "metadata": {
        "id": "jUdZ93-K9ABR"
      }
    },
    {
      "cell_type": "code",
      "source": [
        "#@title Pitches/Instruments Inpainting\n",
        "\n",
        "#@markdown Inpainting settings\n",
        "\n",
        "#@markdown Select desired instruments to inpaint.\n",
        "\n",
        "#@markdown Selected instruments MUST BE present in the composition for inpainting to work\n",
        "\n",
        "#@markdown You can stop the inpainting at any time to render partial results\n",
        "\n",
        "Piano = False #@param {type:\"boolean\"}\n",
        "Guitar = False #@param {type:\"boolean\"}\n",
        "Bass = False #@param {type:\"boolean\"}\n",
        "Violin = False #@param {type:\"boolean\"}\n",
        "Cello = False #@param {type:\"boolean\"}\n",
        "Harp = False #@param {type:\"boolean\"}\n",
        "Trumpet = False #@param {type:\"boolean\"}\n",
        "Sax = False #@param {type:\"boolean\"}\n",
        "Flute = False #@param {type:\"boolean\"}\n",
        "Choir = False #@param {type:\"boolean\"}\n",
        "Organ = False #@param {type:\"boolean\"}\n",
        "\n",
        "#@markdown Generation settings\n",
        "\n",
        "number_of_prime_notes = 64 #@param {type:\"slider\", min:1, max:512, step:1}\n",
        "number_of_memory_tokens = 1023 #@param {type:\"slider\", min:6, max:2046, step:3}\n",
        "number_of_samples_per_inpainted_note = 4 #@param {type:\"slider\", min:1, max:16, step:1}\n",
        "temperature = 0.9 #@param {type:\"slider\", min:0.1, max:1, step:0.1}\n",
        "\n",
        "#@markdown Other settings\n",
        "\n",
        "render_MIDI_to_audio = True # @param {type:\"boolean\"}\n",
        "\n",
        "\n",
        "inpaint_instrument = []\n",
        "\n",
        "if Piano:\n",
        "  inpaint_instrument.append(0)\n",
        "\n",
        "if Guitar:\n",
        "  inpaint_instrument.append(1)\n",
        "\n",
        "if Bass:\n",
        "  inpaint_instrument.append(2)\n",
        "\n",
        "if Violin:\n",
        "  inpaint_instrument.append(3)\n",
        "\n",
        "if Cello:\n",
        "  inpaint_instrument.append(4)\n",
        "\n",
        "if Harp:\n",
        "  inpaint_instrument.append(5)\n",
        "\n",
        "if Trumpet:\n",
        "  inpaint_instrument.append(6)\n",
        "\n",
        "if Sax:\n",
        "  inpaint_instrument.append(7)\n",
        "\n",
        "if Flute:\n",
        "  inpaint_instrument.append(8)\n",
        "\n",
        "if Choir:\n",
        "  inpaint_instrument.append(10)\n",
        "\n",
        "if Organ:\n",
        "  inpaint_instrument.append(11)\n",
        "\n",
        "\n",
        "print('=' * 70)\n",
        "print('Euterpe X Inpainting Model Generator')\n",
        "print('=' * 70)\n",
        "\n",
        "out2 = []\n",
        "\n",
        "for m in melody_chords_f1[:number_of_prime_notes]:\n",
        "  out2.extend(m)\n",
        "\n",
        "for i in tqdm.tqdm(range(number_of_prime_notes, len(melody_chords_f1))):\n",
        "\n",
        "  try:\n",
        "\n",
        "    if (melody_chords_f1[i][2]-(256+(12*128))) // 128 in inpaint_instrument:\n",
        "\n",
        "      out2.extend(melody_chords_f1[i][:2])\n",
        "\n",
        "      samples = []\n",
        "\n",
        "      for j in range(number_of_samples_per_inpainted_note):\n",
        "\n",
        "        inp = torch.LongTensor(out2[-number_of_memory_tokens:]).cuda()\n",
        "\n",
        "        with ctx:\n",
        "          out1 = model.module.generate(inp,\n",
        "                                1,\n",
        "                                temperature=temperature,\n",
        "                                return_prime=True,\n",
        "                                verbose=False)\n",
        "\n",
        "          with torch.no_grad():\n",
        "            test_loss, test_acc = model(out1)\n",
        "\n",
        "        samples.append([out1.tolist()[0][-1], test_acc.tolist()])\n",
        "\n",
        "      accs = [y[1] for y in samples]\n",
        "      max_acc = max(accs)\n",
        "      max_acc_sample = samples[accs.index(max_acc)][0]\n",
        "\n",
        "      out2.extend([max_acc_sample])\n",
        "    else:\n",
        "      out2.extend(melody_chords_f1[i])\n",
        "\n",
        "  except KeyboardInterrupt:\n",
        "    print('Stopping inpainting...')\n",
        "    break\n",
        "\n",
        "  except Exception as e:\n",
        "    print('Error', e)\n",
        "    break\n",
        "\n",
        "print('Done!')\n",
        "print('=' * 70)\n",
        "\n",
        "#==================================================\n",
        "\n",
        "print('Rendering results...')\n",
        "print('=' * 70)\n",
        "\n",
        "if len(out2) != 0:\n",
        "\n",
        "    song = out2\n",
        "    song_f = []\n",
        "\n",
        "    time = 0\n",
        "    dur = 0\n",
        "    channel = 0\n",
        "    pitch = 0\n",
        "    vel = 90\n",
        "\n",
        "    for ss in song:\n",
        "\n",
        "      if ss > 0 and ss < 256:\n",
        "\n",
        "          time += ss * 8\n",
        "\n",
        "      if ss >= 256 and ss < 256+(12*128):\n",
        "\n",
        "            dur = ((ss-256) % 128) * 30\n",
        "\n",
        "      if ss >= 256+(12*128) and ss < 256+(12*128)+(12*128):\n",
        "          channel = (ss-(256+(12*128))) // 128\n",
        "          pitch = (ss-(256+(12*128))) % 128\n",
        "\n",
        "          if velocity_type_to_use == 'Constant Velocity':\n",
        "            vel = velocities_map[channel]\n",
        "          else:\n",
        "            vel = round(dynamic_velocities_map[pitch][instruments_patches[channel]])\n",
        "\n",
        "          song_f.append(['note', time, dur, channel, pitch, vel ])\n",
        "\n",
        "    detailed_stats = TMIDIX.Tegridy_ms_SONG_to_MIDI_Converter(song_f,\n",
        "                                                              output_signature = 'Euterpe X',\n",
        "                                                              output_file_name = '/content/Euterpe-X-Music-Composition',\n",
        "                                                              track_name='Project Los Angeles',\n",
        "                                                              list_of_MIDI_patches=[0, 24, 32, 40, 42, 46, 56, 65, 73, 0, 53, 19, 0, 0, 0, 0]\n",
        "                                                              )\n",
        "\n",
        "\n",
        "    print('=' * 70)\n",
        "    print('Displaying resulting composition...')\n",
        "    print('=' * 70)\n",
        "\n",
        "    fname = '/content/Euterpe-X-Music-Composition'\n",
        "\n",
        "    x = []\n",
        "    y =[]\n",
        "    c = []\n",
        "\n",
        "    colors = ['red', 'yellow', 'green', 'cyan', 'blue', 'pink', 'orange', 'purple', 'gray', 'white', 'gold', 'silver']\n",
        "\n",
        "    for s in song_f:\n",
        "      x.append(s[1] / 1000)\n",
        "      y.append(s[4])\n",
        "      c.append(colors[s[3]])\n",
        "\n",
        "    if render_MIDI_to_audio:\n",
        "      FluidSynth(\"/usr/share/sounds/sf2/FluidR3_GM.sf2\", 16000).midi_to_audio(str(fname + '.mid'), str(fname + '.wav'))\n",
        "      display(Audio(str(fname + '.wav'), rate=16000))\n",
        "\n",
        "    plt.figure(figsize=(14,5))\n",
        "    ax=plt.axes(title=fname)\n",
        "    ax.set_facecolor('black')\n",
        "\n",
        "    plt.scatter(x,y, c=c)\n",
        "    plt.xlabel(\"Time\")\n",
        "    plt.ylabel(\"Pitch\")\n",
        "    plt.show()"
      ],
      "metadata": {
        "cellView": "form",
        "id": "ejdp32D_9Cs-"
      },
      "execution_count": null,
      "outputs": []
    },
    {
      "cell_type": "markdown",
      "source": [
        "# (HARMONIZATION)"
      ],
      "metadata": {
        "id": "-ljIsqzx0jwr"
      }
    },
    {
      "cell_type": "code",
      "source": [
        "#@title Melody Harmonization\n",
        "\n",
        "#@markdown NOTE: You can stop the harmonization at any time to render partial results\n",
        "\n",
        "#@markdown Harmonization settings\n",
        "\n",
        "melody_instrument = \"Violin\" #@param [\"Piano\", \"Guitar\", \"Bass\", \"Violin\", \"Cello\", \"Harp\", \"Trumpet\", \"Sax\", \"Flute\", \"Choir\", \"Organ\"]\n",
        "number_of_prime_melody_notes = 4 # @param {type:\"slider\", min:0, max:50, step:1}\n",
        "\n",
        "#@markdown Generation settings\n",
        "\n",
        "number_of_memory_tokens = 2046 # @param {type:\"slider\", min:33, max:2046, step:3}\n",
        "temperature = 0.9 #@param {type:\"slider\", min:0.1, max:1, step:0.1}\n",
        "\n",
        "#@markdown Other settings\n",
        "\n",
        "render_MIDI_to_audio = True # @param {type:\"boolean\"}\n",
        "\n",
        "print('=' * 70)\n",
        "print('Euterpe X Melody Harmonization Model Generator')\n",
        "\n",
        "print('=' * 70)\n",
        "print('Extracting melody...')\n",
        "#=======================================================\n",
        "\n",
        "instruments_list = [\"Piano\", \"Guitar\", \"Bass\", \"Violin\", \"Cello\", \"Harp\", \"Trumpet\", \"Sax\", \"Flute\", 'Drums', \"Choir\", \"Organ\"]\n",
        "melody_instrument_number = instruments_list.index(melody_instrument)\n",
        "\n",
        "melody = []\n",
        "pe = events_matrix1[0]\n",
        "\n",
        "for e in events_matrix1:\n",
        "    if e[3] != 9:\n",
        "\n",
        "      # Cliping all values...\n",
        "      time = max(0, min(255, e[1]-pe[1]))\n",
        "      dur = max(1, min(127, e[2]))\n",
        "      cha = melody_instrument_number\n",
        "      ptc = max(1, min(127, e[4]))\n",
        "\n",
        "      if ptc < 60:\n",
        "        ptc_aug = (ptc % 12) + 60\n",
        "      else:\n",
        "        ptc_aug = ptc\n",
        "\n",
        "      # WRITING EACH NOTE HERE\n",
        "      cha_dur = (cha * 128) + dur\n",
        "      cha_ptc = (cha * 128) + ptc_aug\n",
        "\n",
        "      if time != 0:\n",
        "        melody.append([time, cha_dur+256, cha_ptc+1792])\n",
        "\n",
        "      pe = e\n",
        "\n",
        "melody[0][0] = 0\n",
        "\n",
        "#=======================================================\n",
        "\n",
        "print('=' * 70)\n",
        "print('Melody has', len(melody), 'notes')\n",
        "print('Melody has', len(melody)*3, 'tokens')\n",
        "\n",
        "print('=' * 70)\n",
        "print('Starting harmonization...')\n",
        "print('=' * 70)\n",
        "\n",
        "outy = []\n",
        "\n",
        "for m in melody[:number_of_prime_melody_notes]:\n",
        "  outy.extend(m)\n",
        "\n",
        "next_chord_time = 0\n",
        "chord_time_delta = 0\n",
        "cur_time = 0\n",
        "\n",
        "for i in tqdm.tqdm(range(number_of_prime_melody_notes, len(melody))):\n",
        "\n",
        "  try:\n",
        "    outy.extend(melody[i])\n",
        "\n",
        "    #====================================================\n",
        "\n",
        "    outy.extend([0])\n",
        "\n",
        "    inp = [outy[-number_of_memory_tokens:]]\n",
        "    inp = torch.LongTensor(inp).cuda()\n",
        "\n",
        "    with ctx:\n",
        "      out = model.module.generate(inp,\n",
        "                            2,\n",
        "                            temperature=temperature,\n",
        "                            return_prime=False,\n",
        "                            eos_token=None,\n",
        "                            verbose=False)\n",
        "\n",
        "    out0 = out.tolist()[0]\n",
        "\n",
        "\n",
        "\n",
        "    if (((out0[1]-(256+(12*128))) // 128) != melody_instrument_number):\n",
        "      outy.extend(out0)\n",
        "    else:\n",
        "      outy.pop()\n",
        "\n",
        "    #====================================================\n",
        "\n",
        "    out0 = [0, 0, 0]\n",
        "    pout0 = []\n",
        "\n",
        "    while out0[0] == 0 and out0 != pout0:\n",
        "\n",
        "      pout0 = out0\n",
        "\n",
        "      inp = [outy[-number_of_memory_tokens:]]\n",
        "      inp = torch.LongTensor(inp).cuda()\n",
        "\n",
        "      with ctx:\n",
        "        out = model.module.generate(inp,\n",
        "                              3,\n",
        "                              temperature=temperature,\n",
        "                              return_prime=False,\n",
        "                              eos_token=None,\n",
        "                              verbose=False)\n",
        "\n",
        "      out0 = out.tolist()[0]\n",
        "\n",
        "      if out0[0] == 0 and (((out0[2]-(256+(12*128))) // 128) != melody_instrument_number) and out0 != pout0:\n",
        "        outy.extend(out0)\n",
        "\n",
        "    #====================================================\n",
        "\n",
        "  except KeyboardInterrupt:\n",
        "    break\n",
        "\n",
        "  except Exception as e:\n",
        "    print('Error', e)\n",
        "    break\n",
        "\n",
        "print('=' * 70)\n",
        "print('Done!')\n",
        "print('=' * 70)\n",
        "\n",
        "#======================================================================\n",
        "\n",
        "print('Rendering results...')\n",
        "print('=' * 70)\n",
        "\n",
        "out1 = outy\n",
        "\n",
        "print('Sample INTs', out1[:12])\n",
        "print('=' * 70)\n",
        "\n",
        "if len(out1) != 0:\n",
        "\n",
        "    song = out1\n",
        "    song_f = []\n",
        "\n",
        "    time = 0\n",
        "    dur = 0\n",
        "    channel = 0\n",
        "    pitch = 0\n",
        "    vel = 90\n",
        "\n",
        "    for ss in song:\n",
        "\n",
        "      if ss > 0 and ss < 256:\n",
        "\n",
        "          time += ss * 8\n",
        "\n",
        "      if ss >= 256 and ss < 256+(12*128):\n",
        "\n",
        "          dur = ((ss-256) % 128) * 30\n",
        "\n",
        "      if ss >= 256+(12*128) and ss < 256+(12*128)+(12*128):\n",
        "          channel = (ss-(256+(12*128))) // 128\n",
        "          pitch = (ss-(256+(12*128))) % 128\n",
        "\n",
        "          if velocity_type_to_use == 'Constant Velocity':\n",
        "            vel = velocities_map[channel]\n",
        "          else:\n",
        "            vel = round(dynamic_velocities_map[pitch][instruments_patches[channel]])\n",
        "\n",
        "          song_f.append(['note', time, dur, channel, pitch, vel ])\n",
        "\n",
        "    detailed_stats = TMIDIX.Tegridy_ms_SONG_to_MIDI_Converter(song_f,\n",
        "                                                              output_signature = 'Euterpe X',\n",
        "                                                              output_file_name = '/content/Euterpe-X-Music-Composition',\n",
        "                                                              track_name='Project Los Angeles',\n",
        "                                                              list_of_MIDI_patches=[0, 24, 32, 40, 42, 46, 56, 65, 73, 0, 53, 19, 0, 0, 0, 0]\n",
        "                                                              )\n",
        "\n",
        "\n",
        "    print('=' * 70)\n",
        "    print('Displaying resulting composition...')\n",
        "    print('=' * 70)\n",
        "\n",
        "    fname = '/content/Euterpe-X-Music-Composition'\n",
        "\n",
        "    x = []\n",
        "    y =[]\n",
        "    c = []\n",
        "\n",
        "    colors = ['red', 'yellow', 'green', 'cyan', 'blue', 'pink', 'orange', 'purple', 'gray', 'white', 'gold', 'silver']\n",
        "\n",
        "    for s in song_f:\n",
        "      x.append(s[1] / 1000)\n",
        "      y.append(s[4])\n",
        "      c.append(colors[s[3]])\n",
        "\n",
        "    if render_MIDI_to_audio:\n",
        "      FluidSynth(\"/usr/share/sounds/sf2/FluidR3_GM.sf2\", 16000).midi_to_audio(str(fname + '.mid'), str(fname + '.wav'))\n",
        "      display(Audio(str(fname + '.wav'), rate=16000))\n",
        "\n",
        "    plt.figure(figsize=(14,5))\n",
        "    ax=plt.axes(title=fname)\n",
        "    ax.set_facecolor('black')\n",
        "\n",
        "    plt.scatter(x,y, c=c)\n",
        "    plt.xlabel(\"Time\")\n",
        "    plt.ylabel(\"Pitch\")\n",
        "    plt.show()"
      ],
      "metadata": {
        "cellView": "form",
        "id": "N9bBlUQlsR67"
      },
      "execution_count": null,
      "outputs": []
    },
    {
      "cell_type": "markdown",
      "source": [
        "# Congrats! You did it! :)"
      ],
      "metadata": {
        "id": "eoWDEy6CwDr6"
      }
    }
  ],
  "metadata": {
    "accelerator": "GPU",
    "colab": {
      "private_outputs": true,
      "provenance": [],
      "gpuType": "T4",
      "gpuClass": "premium"
    },
    "kernelspec": {
      "display_name": "Python 3",
      "name": "python3"
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    "language_info": {
      "codemirror_mode": {
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