Guest List: David Bowie

David Bowie's songs were often the product of collaboration, and he was equally generous with his own time and ideas. As a guest vocalist, he brought a uniquely artsy quality to Arcade Fire's indie rock and the bassquakes of Massive Attack, among others. He also wrote and produced for his heroes and peers, helping craft career peak (and similarly glammy) hits for Lou Reed, Mott the Hoople and Iggy Pop.