> a musician could compose melody, harmony, and lyrics and generate many performances of the same song until they get one they like

Can't relate to this. Art doesn't come out as a left-brained problem solving exercise or identifying the right product for a market. It's about expression. You do it when you're feeling things.

I'm a composer and I can 100% get behind this workflow. I will often compose on one instrument (guitar or keys) and then throw the midi into a DAW and experiment with sounds.

This is that.