S1, E9: The twins enter the "Battle of the Bands." Cody and Zack have some "creative differences" and break up the band, only to realize, two are better than one.
Estelle Harris
Brian Stepanek
Alyson Stoner
Dennis Bendersky
Aaron Musicant
Lewis Dix Jr.
Chevy Lamont Cofield
Sam Freiberger