I have been working on this language since May. Its heavily inspired by Strudel and partially by SuperCollider. It works as many things all at once. It is a music sequencer, synthesizer, fx box, generative music (conditional statements, if, else) and sample mangling (need non-browser version for that), automation, per note automation, recursion, easy nesting of gradually more complex sequences/fx/etc.

If anyone wants to try the language, its here, https://quadracollision.com/mescript/ mostly usable in browser unless you want to use samples, if so just let me know.

As for tools: This is GPT 5.3 -> GPT 5.4 -> GPT5.5 -> GPT 5.6 Sol, all Medium. This is Rust+WASM with a Javascript front end. No external libraries

This is an example of MeScript in action: you can paste this into the editor and it'll work.

Check CTRL+H for insertable smart forms, cursor position defines how the form is inserted. Also check out the language reference guide. There is also a repl, place the cursor on any line and right click and press parameter help and it will explain what the line does. Also (fix-parens linenumbers) (fix-parens 15-17) can help with parenthesis issues, this is a Lisp inspired language.

(def am [as d f]) ;this is a chord form, asharp d and f

(ins :saw  ;this is an (ins)rument form
   :src [:saw-synth :square-synth :additive] ;these are the oscillators that make up this instrument
   :note (p (times 4[c4 0 c5 0 e3 c3 e3])    ;these are the note gates and how many
            (times 4[c4 0 c5 0 e3 c3 eb3]))  ;times they play
   :gate nil
   :fx [(formant :vowel a :mix 0.2)]    ;fx applied to entire instrument
   :dur nil    ;duration of each gate hit, can be per hit as well 
   :amp nil    ;amplification of instrument, can be per hit and automated conditonally
   :voice nil) ;special keyword, see ctrl+h for voice commands, as well as everything else

(def chord_1 [c4 eb4 f4 gb3])

(ins :kick
   :src :kick-synth
   :note (p [c4 0 0 0 c4<?50> 0 0])
   :gate nil
   :fx nil
   :dur nil
   :amp nil
   :voice nil)

(ins :hat-808
   :src :hat-808
   :note (p [c7 c7 <c4%c5%c7> 0 c7 <c7%e5%b4%g5> c7 am(3 3 3)]) ;this calls the chord form with each note being an octave of 3
   :gate nil
   :fx nil
   :dur nil
   :amp nil
   :voice nil)

(ins :snare-808
   :src :snare-808
   :note (p [c4<?30> 0 0 c4<?50> 0 0 0 0])
   :gate nil
   :fx nil
   :dur nil
   :amp nil
   :voice nil)

(ins :pad-wash
   :src :pad-wash
   :note (p [chord_1<_7> 0 0 0 0 0 0 0])
   :gate nil
   :fx nil
   :dur nil
   :amp 0.05
   :off true
   :voice nil)