Yesterday i used Claude Code to define and implement a YAML based DSL for playing backing tracks. I can ask an LLM to generate this DSL for any well known song, and it will include chord progression, lyrics, bass, drums, strumming pattern, etc. It's a go command line tool that plays the DSL via midi, and displays the chords, strumming patterns, and lyrics. Also does export to Strudel.
Most of the languages on the list have not been maintained in decades with many being for functionally extinct if not completely extinct systems. It is not really a list meant to guide you to a language to use, it is more about historical/academic interest.
Musicabc has some really nice JS and Obsidian plugins that essentially allow you to create little scrapbooks of musical ideas in markdown that are also playable as sound and viewable as sheet music.
There is also literate programming for music, right? Just like Donald Knuth describes it in his literate programming approach? See for example the videos by Fauci etc. They say things like eh eh, pause then play music using items such as a pen, there is even a conductor. Very entertaining. Is that true? Or just my imagination?
Csound (I think v3) was the first music language I played with, back in the early 90s, under DOS even. Back then, running in real-time wasn't a thing. Generate a WAV file and play it after the program finished.
Later, at the end of the 90s, I remember playing with CLM/CM, in common lisp.
But the most productive experience was definitely SuperCollider. I can only recommend giving it a try. Its real-time sound synthesis architecture is great. Basically works sending timestamped OSC messages AOT (usually 0.2s). It also has a very interesting way of building up so-called SynthDefs from code into a DAG. I always wondered if a modern rewrite of the same architecture using JIT/AOT technology would be useful. But I digress... SC3 is a great platform to play with sound synthesis... Give it a try if you find the time.
Here's a currently active list on github in case somebody's left needing a fix of music programming: https://github.com/zoejane/awesome-music-programming
https://abc.hieuthi.com/
But the most productive experience was definitely SuperCollider. I can only recommend giving it a try. Its real-time sound synthesis architecture is great. Basically works sending timestamped OSC messages AOT (usually 0.2s). It also has a very interesting way of building up so-called SynthDefs from code into a DAG. I always wondered if a modern rewrite of the same architecture using JIT/AOT technology would be useful. But I digress... SC3 is a great platform to play with sound synthesis... Give it a try if you find the time.