Wow, glicol looks amazing! One of the few music languages I’ve seen which actually tries to balance low-level synthesis with higher-level sequencing. (The only other one I know of is extempore: https://extemporelang.github.io/)
[0] https://extemporelang.github.io/ [1] https://www.euterpea.com/euterpea/ [2] http://commonmusic.sourceforge.net/
I've played with a lot of languages for music, including the ones you mention, and for my tastes, Scheme is the loveliest. Eventually I plan to play more with Extempore too.