33. Jay Z, "99 Problems"
Rick Rubin hadn't worked on a hip-hop project for years when Def Jam's Lyor Cohen persuaded him to get in the studio with Jay Z. "I knew I was gonna get fresh shit," Cohen recalled. He got one of the most explosive tracks ever, based around the gigantic drums from Billy Squier's "The Big Beat." Jay concocts an indelible pop chorus and sketches out a scene based on an encounter with a racist cop from his pre-stardom days. "The first offense wasn't the crack in the ride but the color of the driver," he wrote in his memoir.