4 beats, 4 bars, every now and then, made on a Teenage Engineering PO-33 K.O. II. Each one is a short loop, numbered in the order it was made.
7 beats so far, newest first. Each is a WAV streamed from https://jakehandy.com/api/4x4s/audio/<file>.
The list itself is JSON at https://jakehandy.com/api/4x4s.