A bidirectional MIDI to Nix-like text format converter. Compose MIDI in your favorite text editor using a structured, human-readable format, or convert existing MIDI files to text for analysis and modification.

• Bidirectional Conversion: Convert .mid to .nix and .nix back to .mid.
• Nix-like Syntax: Clean, declarative format for musical data.
• Support for Multiple Tracks: Handle complex compositions with independent channels and instruments.
• Control Changes: Support for CC events like Sustain Pedal, Volume, etc.
• Comments Support: Use # for single-line and /* */ for multi-line comments in your Nix files.
• High Fidelity: Preserves MIDI format (SingleTrack vs MultiTrack) during round-trips.

Ensure you have the .NET SDK installed.

git clone https://github.com/memoryapi/mid2nix
cd mid2nix
dotnet build

dotnet run -- to-text input.mid output.nix

dotnet run -- to-midi input.nix output.mid

{
  header = {
    format = 1;
    ticksPerBeat = 480;
    tempo = 120;
    timeSignature = "4/4";
  };

  tracks = [
    {
      name = "Piano";
      channel = 1;
      instrument = "0"; # Grand Piano
      notes = [
        { pitch = "C4"; start = 0.0; dur = 1.0; vel = 100; }
        { pitch = "E4"; start = 1.0; dur = 1.0; vel = 100; }
        { pitch = "G4"; start = 2.0; dur = 2.0; vel = 110; }
      ];
    }
  ];
}

This project is licensed under the GPLv3 License - see the LICENSE file for details.