This may be of interest to you. Not exactly what you’re asking, but it may give you clues as to people and research to check out.

https://www.youtube.com/watch?v=xMYm2d9bmEA

I also remembered a friend telling me about someone talking about a method to detect AI music. I forget the specifics (I haven’t watched the video, was only told about it) but I remember the channel.

https://www.youtube.com/@RickBeato