John's Mother
The singing, rhyming citizens of Hamelin hope to win a competition with rival towns for royal recognition. To this end, the mayor outlaws play (which is a bit hard on the children) and refuses to help a rival town when it's flooded. But rats (seen only as shadows), fleeing the flood, invade Hamelin in droves; a magical piper, whose music only children (and rats) can hear, strikes a bargain...which, once the rats are gone, the Mayor and council renege on, to their subsequent regret.
Self
Liza Lee, fast-talking press agent for Al Jarvis, persuades Jarvis to stage a Musical Mystery Contest, with a $5000 prize to the person who can first name the most musical numbers and their performers. Lots of musicians perform.