"The Loudest Lullaby (You've Ever Heard)" is a Sesame Street song performed by Grundgetta. She sings how the latest lullaby goes against the conventions and is very loud. Writer Norman Stiles reflected on the song's original intent: The song ended up also being used in a season 21 episode, where Oscar, Snuffy and Alice listen to a truncated version playing on the radio (as performed by Grundgetta and her back-up band, the Grungettes).