Looks great! But on latest Android Chrome here, the live demo plays two hits then silence.

Volume warning on that demo, lol

I haven't tried the demo but I love this idea!

Would be cool if I could somehow constrain a chord to a key then enumerate the scale degrees that I want so I can make some real funky sounds that don't fit the standard Chord Qualities.

This reminds me of streudal:

https://strudel.cc/

https://larkob.github.io/strudel/tutorial/

I've seen some cool demos on YouTube from SwitchAngel.

I have absolutely no idea what to do with this but I'mma play around with it.

How are things going with Sonic Pi?[1] I have lots of fond memories and don't remember there being many strongly popular alternatives some years ago... though maybe I was living under a rock (..and roll).

[1]: https://sonic-pi.net/

Very neat. Would love to see events for each instrument laid out along a timeline!