Virtual bands are a thing.
I’m talking about real bands with real songs, but represented as animated cartoon characters. Virtual bands have been around for generations, starting with Alvin and the Chipmunks in the late '50s. The Archies were a band on TV, as were Josie and the Pussycats and Jem and the Holograms. These were all television studio creations, as is Dethklok from Adult Swim’s Metalocalypse series. Some virtual bands, though, seem instead to have been imagined by the musicians themselves, and they are capable of very interesting things.