Cromulon

The Cromulons are a species of planet-sized entities appearing as giant heads which, according to Rick Sanchez, feed on the musical talent of other species. When a Cromulon travels to Earth seeking the musical talent of Earth, which it received in the performance Sanchez and his grandson Morty Smith in their original song "Get Schwifty", Earth was abducted and involuntarily forced into competing in "Planet Music", a reality show hosted by the Cromulons in which several species compete in a musical competition, and the planets of those eliminated from the contest are destroyed.