David Bowie was seemingly in danger of being a one-hit wonder by 1972. "Space Oddity" was three long years in the past, and the music scene had changed dramatically in that time. Bowie remained cocky, though, and on the lead single from Hunky Dory he even unloaded a warning on his rivals. "Look out you rock & rollers," he sang. "Pretty soon you're gonna get a little older." They were brash words for somebody without much of a following, but they proved prophetic. The song also became a theme of sorts as Bowie metamorphosed through the decades. In 2006, he sang it with Alicia Keys at the Hammerstein Ballroom at a charity show. It was his last public performance.