Not only that, but getting to authenticity in musical expression is hard and kind-of the point if it, one of the big challenges of composition is I think to get as far as possible from what an AI could have produced based on current music, current taste, current everything. Case in point: Eurythmics "sweet dreams" written when the band was ready to give up and found their voice, or Damon Albarn's letting it all hang out with his Gorillaz departure from Brit-Pop...
How much self expression is there in an artist having engineers and producers completely define their sound, and in most cases having songwriters that produce the skeleton of lyrics/melody?
Replacing self expression with an LLM is just hollowing yourself out, it’ll be evident to you and everyone else when you’re not behind a screen.