Just two years after introducing glam rock to a global audience, Bowie realized it was time to move on. Thankfully, he recorded one more glam classic that essentially summed up the entire movement. The famous opening guitar sounds like some lost Keith Richards riff, but it's actually Bowie himself. Much like "All the Young Dudes," "Rebel Rebel" is about glam-rock fans, only this time he's writing about girls. "You love bands when they're playing hard," he sings. "You want more and you want it fast." The song was a massive hit, and he could have easily repeated the formula for years, but a huge part of Bowie's genius is his willingness to burn his own past and move onto something completely different.