The Simpsons break out in song--over and over again--as we dance along memory lane and watch all of the musical interludes from the last eight seasons. Apu asks who needs the Kwik-E-Mart! The Maison Derriere puts the spring in Springfield! Shary Bobbins teaches Bart and Lisa to cut corners! The writers, meanwhile, sing and dance all the way to the bank as the editors put the show together.