Computers were DJing in 2005:
https://www.hpl.hp.com/techreports/2005/HPL-2005-88.html
In fact, before that - i saw a talk on this while i was a student, and i finished university in 2003, i think.
The guy who did this work went on to get the computer to do production, but i don't know how that panned out.
If I go to a techno club, I would soooo love to see what an AI can do to make me move my feet more.
But if I listen to some mellow song with lyrics maybe I want to feel the touch of a human artist and his emotions.
I would also love to listen to AI generated music with lyrics, but it would generate different emotions (not worse, just different).
AI generated art will just open another type of experiences, but it will never replace human art.