Sesame Street Avalon 12 Crayons/Mom Was Right (from The Simpsons)

Cast

 * Bert Yellow as Bart Simpson
 * Big Bird Yellow as Marge Simpson

Lyrics
Bert Yellow: Mom was right, your singing's a sin. You're as Les misérable as Lee Marvin.

Big Bird Yellow: Sure your dad's singing could make your hair curl, But you, too, Bert Yellow, have sung and danced like a girl.

Bert Yellow: Eep!