The vast majority of music produced is listened to by nobody, or a handful of people, so this is already the case really.

Music was always about people. Even today, as most people listen to the mass-produced run-of-the-mill muzak, there is still a significant audience that seeks the "human element" for the sake of itself.

Black metal community, for example, has always rejected all forms of "automation" and considers it not kvlt - rawness is a sought-after quality, defined as having people performing as close to the recording equipment as possible.

There's also a rapper named Bones (Elmo O'Connor) who's never signed a contract with a label, does only music he wants to do, releases a couple albums every year. There's something about his approach that makes his music sound very organic and honest. I listen to him more than I listen to any mass produced rapper.

So in conclusion, music was always about people. Unless AI reaches AGI level, I don't think it will ever impact music enough to kill all audience.

I agree with this so much that I’d take off the comment about AGI: I think that even if/when AGI lands there will always be audiences that seek raw, organic, and honest artistic expression from other humans.