Now of course there have to be limits to that. If I created a virtual AI musician called Saylor Twift, whose music is exclusively made by "sounding like" existing Taylor Swift songs, I could see a strong justification for getting copyright sued. I also fully support the rights of Scarlett Johansson against OpenAI about the voice that "sounds like" her. It seems to me that this has a rather simple algorithmic solution. If we block AI music generators and voice generators from using more than let's say 10% of any single existing human voice in generating an AI voice from training data, the result wouldn't sound like anybody specific.

One of the Twitch streamers I sometimes watch has used an AI music generator to create several songs of different music styles, all with also AI generated lyrics that sing about how great a streamer he is. It is pretty funny. There actually used to be a time in history where lords paid bards to do exactly that, create music praising them. Some games these days actually have in their settings a "streamer music" option, so that no copyrighted music is played when a streamer is streaming that game. Sometimes music is just background, and it is good to have a non-copyright source for that, even if it just sounds generic. I doubt that AI generated music is actually a threat to great artists. And if minor artists are threatened by AI being better at creating generic music than they are, that isn't a great loss.