In CV: Terry Riley's "In C" implementation for Eurorack

This Eurorack module implements a virtual ensemble of six performers that play Terry Riley's "In C" on 1V/oct CV/gate outputs. Each performer has a button to advance through the 53 patterns, or to pause at the end of the current loop (long-press). 10 HP, less than 40mm deep, 40mA on +12V.

An external clock input is required to control playback speed. LEDs show when a note is played, but will start blinking if the performer is left behind by three or more patterns. Press the main button to show late performers, or to reset everything to initial state (long-press). In the initial state every performer plays a steady C with no gate (for tuning), until the advance button is pressed and the first pattern starts being played.

The code is open-source, and can be customized with the Arduino on the back. You can write and upload your own patterns and sequences to make the module play just about anything. Instructions publicly available on GitHub.

⚠️ This product is handmade and built on request. Due to the manufacturing process, the actual product may have slight imperfections in the finish and vary slightly from the images shown online.