[jiberwarrior]

A bit late to the party, but I wrote a generator for a project last year running on vanilla JS with a simple HTML front end. There is no recording feature, but I'm sure you could just record the playback externally.

https://github.com/gee842/genmusic

hosted here: http://genmusic.byethost11.com/genmusic/

[jiberwarrior]

at the suggestion of another user, I changed hosts to github pages, rather than a shady web-host.

https://gee842.github.io/genmusic/dev/index2.html