Syd Barrett (left) perplexed Alice Cooper (right) and his band during Pink Floyd's brief 1967 stay with the group in Los Angeles. The U.K.'s Pink Floyd and America's Alice Cooper band were trying to make names for themselves on the rock scene when their world's unexpectedly collided in Los Angeles in the late 1960s. Floyd was in its early incarnation, and featured guitarist and singer Syd Barrett, keyboardist Richard Wright, bass guitarist Roger Waters and drummer Nick Mason. “[He] de-tuned all of his strings on his guitar, hitting it to make this god-awful noise.”Ironically, Floyd’s drug-related antics had an unexpectedly positive effect on the Alice Cooper band. “We had an audition at Gazzarri’s, and Pink Floyd said they’d come down with us,” Cooper recalls.