In addition to his work with Lagwagon, he was the lead vocalist for the experimental band Bad Astronaut until they disbanded due to death of drummer Derrick Plourde and is also a guitarist in the cover band Me First and the Gimme Gimmes. Moreover, Joey Cape released two split albums with Tony Sly of No Use for a Name, featuring acoustic versions of Lagwagon and No Use For a Name songs. Both Cape and Sly also contributed one unreleased/new song to the split. Cape's was titled, 'Violet', a song written for his daughter of the same name. He has also contributed a song called 'Minus' for the album Protect: A Benefit for the National Association to Protect Children.