it's not exactly like black midi but there used to be a scene there
Shoutbox archive
they have competitions where they have to make a song that's a few kilobytes or uses specific samples, etc
also if you like music contest things check out battle of the bits https://battleofthebits.com/
to me the synths sound less like instruments and more like an alien NES
feel like the instruments would be better with simulated plucks and what not
internet has established this fusion period now what happens, i'm excited to find out
sort of reminds me of when people would draw pictures with ghost notes in .mod files
i feel like black midi meets microtonal could work if somone could do it