Not only overtone for music - https://github.com/alda-lang/alda

My weekly clojure art project group (for beginners) now has a tumblr http://clojure-art-group.tumblr.com

@jellea: nice! Have you folks looked at Alda? Might be a good fit for those interested in music.

@delaguardo: We've got an #C0AGEL9L1 channel here also.