The band
Not playing.
Per second, on this device
Reverb
Ceiling
Adds silent sine waves until the audio thread runs out of time. Takes about ten seconds. A soft chord plays so you can hear the moment it breaks up.
Each part is a gear. Own pulse: its teeth spread over the bar, ignoring everyone. Follows: one tooth per tooth of that part, and it can only sound where that part sounds. Carry: one tooth each time that part completes a turn. You: one tooth per note you play. +3: its pattern slips 3 teeth every turn. ★ holds this bar's variation. While the band plays, each part shows its signature: whether it calls or answers this bar (a part and the parts it drives are always opposite), where it sits against the beat, and its steam.
Jam
Give a friend the same code. You each play on your own bar lines and hear each other one bar later, in time.