Constellation is a MIDI sequencer/arpeggiator for Ableton Live. Based on my project Shape Your Music, it allows you to compose melodies and harmonies by manipulating a polygon.

Use the shape editor to create and perform sequences. Edges represent notes, and the angles at each corner determine the musical interval between notes. Set the starting note by clicking on the keyboard, or with MIDI input.

Stack multiple devices in parallel to produce complex rhythms and harmonies. The color is purely aesthetic and is determined by the starting note.

Stacking multiple devices in series allows the first device's output to control the starting note of the next device. This allows for more evolving patterns.