A polyphonic 16-step sequencer. Sequences can be chained for complete songs.

npm install

In config.js, you can set which MIDI channels the sequencer outputs to. By default, it's 1, 2, 3 and 4. Can be configured to up to 6 different channels.

Connect a Launchpad device (tested with Launchpad Mini) to the computer. Launch the script:

npm start PreenFM

Where PreenFM is your destination MIDI device.

The right-side column represents patterns.

• Pads A-F switch between 6 multi-channel sequences.
• Pad G toggles play/pause
• Pad H (the last pad) triggers the recording mode.

The top row switches launchpad layouts and activates special functions.

1. Four drum tracks
2. A single melody track with 48 note keys
3. A second melody track
4. No function yet
5. No function yet
6. No function yet
7. No function yet
8. Scene chaining – hold it and press pads A-F in a desired order to chain them.