Bart gets the Red Hot Chili Peppers out of a gig they didn't want to do and brings them to perform at Krusty's Show.

Lenni is composing lyrics for an original song.

Muddy Waters and harmonica player, Little Walter, have a showdown between the guitar and the harmonica.

Maria and the Von Trapp children sing "Do-Re-Mi" while riding through Austria. In the process, they learn the notes of the major musical scale.

The CyberSquad's only way out of a giant room is the keyhole. In order to reach the keyhole, they need to determine the length of the rope that will bring them to it. They learn that objects in this world are ten times bigger than objects in their own world, and they use that knowledge to estimate how far away the keyhole is.