The Simpsons Episode 501 Homer’s Barbershop Quartet Episode Title:Homer’s Barbershop Quartet.Episode Description:In a flashback, Homer recounts his time with a barbershop quartet called The Be Sharps that also featured Principal Skinner, Apu and Chief Wiggum who was later replaced with Barney. The group became music stars with their hit song "Baby on Board" and won a Grammy. Eventually, Homer started missing his family and the group began to lose its popularity, so it broke up.