[throwaway422432]

I messed around with Udio when it first cam out, and it wasn't just writing a prompt, and there's your song.

You got 30 seconds, of which there might have been a hook that was interesting. So you would crop the hook and re-generate to get another 30 seconds before or after that, and so on.

I would liken it more as being the producer stitching together the sessions a band have recorded to produce a song.