I think you can provide lyrics yourself, can udio generate lyrics on its own? I listened to some of the staff pick songs, and they were pretty good. I'm not musically inclined, and I have zero skill in coming up with lyrics, but stuff like this and Midjourney let me be creative in ways I don't have natural talent in.
I bet Udio is going to loathed by musicians even harder then artists hate Midjourney.