I see the applicability more for video games. There are a bunch of problems that don't exist in other forms of music, e.g. when you want to make the music adapt to user actions.

"The Double-Edged Nature of Video Game Music" https://www.youtube.com/watch?v=HZB2_hlgKoA

Wouldn't solve all the problems, but I think there could be very interesting results if a composer provides skeletons of themes used, and "AI" adapts them to world and player state dynamically.