The last time this happened, the deal was that the music was generated by bots, and also listened to by bots. Basically it was a scheme to get money out of Spotify.

https://arstechnica.com/information-technology/2023/05/spotify-ejects-thousands-of-ai-made-songs-in-purge-of-fake-streams/

But also, folks will use AI to generate anything these days, like these books that suggested that a good way to identify whether mushrooms are poisonous is to taste them.

https://www.theguardian.com/technology/2023/sep/01/mushroom-pickers-urged-to-avoid-foraging-books-on-amazon-that-appear-to-be-written-by-ai