It's interesting tech but none of the musical pieces impressed me (I play multiple instruments and have written and arranged music), most sounded too repetitive and not very imaginative. This is also an issue with diffusion based art AI in general, its good at a limited set of things but gets rather repetitive after a while. I could see using this as background music where quality is not important, like in games, though I doubt you could run the AI generator inside a game, you could generate it as a asset. People like Hans Zimmer and Ludwig Göransson have nothing to worry about.

Singing would an interesting experiment, but I don't see that here.