I suspect ai music will have the uncanny valley/98% done problem for a while. For 1 I suspect the 'DJ' in your example, being an actual DJ or the artist themselves plays a larger part in how people listen to music, especially when it comes to 'pop music' (it may be less so for electronic/classical/jazz/"artistic" music.
Obviously for anything sort of focus-y, house music downtempo etc. If we're not already there, we'll probably be there soon, though I am curious if a careful listener will eventually notice the uncanny valley problem there. But pop music I'd say has two problems. 1. There's a je ne sais quoi quality that's hard to replicate, and two I imagine the corpus is just not that big. I mean sure, there's a decently large corpus of pop music, but good pop music? how many hip hop billboard charts have there been a thousand, maybe a few thousand. How do you combine Beyonce, Janet Jackson, Mariah Carey and Whitney Houston into a banger that doesn't sound too much like Beyonce', Janet Jackson, Mariah Carey and Whitney Houston without the titular character marketing said music.
Obviously for anything sort of focus-y, house music downtempo etc. If we're not already there, we'll probably be there soon, though I am curious if a careful listener will eventually notice the uncanny valley problem there. But pop music I'd say has two problems. 1. There's a je ne sais quoi quality that's hard to replicate, and two I imagine the corpus is just not that big. I mean sure, there's a decently large corpus of pop music, but good pop music? how many hip hop billboard charts have there been a thousand, maybe a few thousand. How do you combine Beyonce, Janet Jackson, Mariah Carey and Whitney Houston into a banger that doesn't sound too much like Beyonce', Janet Jackson, Mariah Carey and Whitney Houston without the titular character marketing said music.