No, no, you misunderstand my intentions. Say there is art in “pop music” (I think there is, as is in classical music or rock; even in 00s or 10s pop). So there is a pinnacle of art.
But if that pinnacle lies on the average of a lot of types of (pop and non pop) music the LLM might give a sound that at first glance sounds like a specific artist.
The Backstreet Boys (and One Direction as well) were pretty good (lol) but any average of boybands will sound like them. That is not a digg on their artistry but on them being the middle of the road in pop.
AI classical will sound romantic? AI rock will sound Three Doors Down? AI art will be deviant like (but there still can be true artistry in that category). That /I/ usually like arts at least a standard deviation away of the middle, is just my snobbery, which I was trying to explain away because in my opinion artistry is in the craftsmanship (not taste of the public).