Sunset Poet wrote...
The companies copied music without permission to teach their systems to create music that will "directly compete with, cheapen, and ultimately drown out" human artists' work, according to federal lawsuits filed against Udio in New York and Suno in Massachusetts."

That what the lawsuit says, Marty, but what copyright law is broken?

Creators of music have a responsibility to their craft. When they have finished using all the notes and words, they must pass them down to the next generation with a simple request. “Use these to create new music.”...Steven McDonald