Multi Hit Wonder

A band or musician who made multiple popular songs but no one knows they are the same person. This tends to happen if a band plays on the radio or if someone just puts a random playlist on shuffle.

Person 1 "Hey I found this super cool song called Sugar!"
Person 2 "Oh I love that song! You should listen to other System of a Down songs like B.Y.O.B or Lonely Day!"
Person 1 "Those are the same band? I always assumed it was different people!"
Person 2 "Yeah, they seem to be Multi Hit Wonders"