High Quality Content by WIKIPEDIA articles! "Homer`s Barbershop Quartet" is the first episode of The Simpsons` fifth season. The episode was written by Jeff Martin and directed by Mark Kirkland. It features The Be Sharps, a barbershop quartet founded by Homer Simpson. The band`s story roughly parallels that of The Beatles. George Harrison and David Crosby guest star as themselves, and The Dapper Dans provide the singing voices of The Be Sharps.