Iggy Pop's gift for improvising lyrics as muscular and sinewy as his body has made him a natural collaborator over his nearly 50-year career. Though David Bowie may have been his best-known musical partner, Iggy has sung with a ridiculously diverse crew of musicians: the earliest punks and new-wavers of the Seventies, minimalist classical composers, electronic polyglots and pop stars whose careers couldn't have existed without his influence – many whom weren't even born when the Stooges were formed. In anticipation of his upcoming Post Pop Depression album with Queens of the Stone Age's Josh Homme, here are 20 of his most fascinating team-ups.