# Orchid Orac Module

An Orac module version of a stand-alone [Orchid-O](https://patchstorage.com/orchid-o/) patch for Organelle.

Orchid is a MIDI chord generator for the Organelle . It is heavily inspired by Tame Impala’s and Telepathic Instruments’ Orchid. It produces chords, bass lines, and arpeggios from a 12-key playfield, with a built-in chord looper that syncs to MIDI clock or runs on its own tempo.

# Overview

– Upper 12 keys – Playfield. Each key is a scale degree or chromatic note. Press a key to play the current chord type rooted there. Notes sound while the key is held; release to stop.
– Lower 12 keys (1–12) — Control surface. Change chord type, extensions, bass, loop.
– AUX — Cycle through pages.
– Knobs — Context-sensitive per page. Knobs use soft-takeover: move past the current value before they engage.

The patch is written in C++, wrapped in an Pure Data patch for Orac, and has been tested on Organelle M.

# Orac Specific Changes

– BPM is not adjustable. It is set by the Orac clock module.
– The looper can be started and stopped by the Orac transport module.
– All MIDI input and output is handled by Orac so the MIDI configuration page has been removed
– Note velocity control has been moved to knob 3 on the main page
– Base note destination is controlled by knob 4 on the performance page. Set a specific Orac module (e.g. “a1”) or use “thru” to send to the next module in the chain.

# Pages

## Main Page

– Knob 1 – Chord Voicing
– Knob 2 – Chord Transpose
– Knob 3 – Note Velocity
– Knob 4 – Base Transpose

## Performance Page

– Knob 1 – Performance Mode
– Knob 2 – Performance Parameter
– Knob 3 – Slop Amount
– Knob 4 – Base Destination

## Key Page

– Knob 1 – Root Note
– Knob 2 – Scale
– Knob 3 – Key Mode
– Knob 4 – BPM (not adjustable)

## Loop Page

– Knob 1 – Loop Enable
– Knob 2 – Number of Chords
– Knob 3 – Beat Division
– Knob 4 – Chord Order