I made a lot of music stuff. I hooked up an Arduino to control music tempo with my heart beat [1], made a browser based sequencer for the Korg NTS-1 [2], and a made a web app to generate patches for Teenage Engineering OP-1/OP-Z [3]

[1]: https://github.com/schollz/heartbpm

[2]: https://schollz.github.io/carp/

[3]: https://op1z.com/