Chorgan
Firmware for Workshop System Computer (Music Thing Modular)
Six-voice morphing chord synthesizer with extension presets and a built-in eight-slot chord sequencer.
- Distribution
- Prebuilt image you flash yourself
- Source
- github.com https://github.com/TomWhitwell/Workshop_Computer/tree/main/releases/91_chorgan
- Homepage
- computer.musicthing.co.uk https://computer.musicthing.co.uk/programs/91-chorgan/
- Synced from
- upstream metadata, raw.githubusercontent.com https://raw.githubusercontent.com/TomWhitwell/Workshop_Computer/main/releases/91_chorgan/info.yaml. Corrections belong upstream.
- synthesizer
- chords
- sequencer
- polyphonic
- portamento
- cards
Description
Six-voice chord synthesizer with a built-in sequencer, inspired by the Music Thing Modular Chord Organ. Knob X and CV In 1 set root pitch, Knob Y picks the interval above the root, and four extension voices fill out the chord from the same harmonic world as that interval. The Main knob morphs all six voices through pulse, sine, saw, sine, pulse. Audio In 1 adds portamento glide and Audio In 2 shifts the voicing through octave inversions. Tap the switch down to cycle extension presets, hold it a second to store a chord, and clock Pulse In 2 to step through up to eight stored chords. Boot with the switch held down for slew mode, where chord changes glide instead of detuning.
Install notes
Copy the UF2 onto the Computer's program card (RP2040 bootloader drive).
Version history
| Version | Date | Notes |
|---|---|---|
| 1.1.0 | 2026-08-04 | Version and date from the card's info.yaml. |