Auto Strings Generator

Ableton Live Extensions SDK 1.0.0-beta.0 based extension for generating string voicings from MIDI tracks.

Features

• Generate 4-part string arrangement from a Top Note MIDI track and Chord Notes MIDI track.
• Generate a simple counter melody from a MIDI arrangement selection or MIDI clip.
• Keep Live SDK integration separate from unit-testable music logic.

Development

This repository does not redistribute Ableton Live Extensions SDK beta packages. Before installing dependencies, place the official SDK tarballs from Ableton in vendor/:

• vendor/ableton-extensions-sdk-1.0.0-beta.0.tgz
• vendor/ableton-extensions-cli-1.0.0-beta.0.tgz

npm install
npm test
npm run build
npm run package

Usage

1. Create MIDI tracks named exactly autoStrings_top and autoStrings_chord.
2. Put the topline melody in autoStrings_top.
3. Put block chord notes in autoStrings_chord.
4. Right-click a MIDI clip/clip slot or MIDI Arrangement selection and choose Extensions > Generate 4-Part Strings.

For Arrangement selections, the dialog can still be used to choose source tracks. For MIDI clips/clip slots, the extension reads autoStrings_top and autoStrings_chord automatically.

• autoStrings_top: topline melody source
• autoStrings_chord: chord notes source

The extension creates:

• Generated Violin I
• Generated Violin II
• Generated Viola
• Generated Cello

The generated edit is grouped into one Live undo step where supported by the SDK host.