Rick Rubin brought his OG magic out of storage to make one of the most explosive beats in rap history, setting body-slam power chords over the drums in Billy Squier's "The Big Beat." Jay-Z concocts an indelible pop chorus and sketches out a scene based on an encounter with a racist patrolman from his pre-stardom days. As Jay wrote in his memoir, "The first offense wasn't the crack in the ride but the color of the driver."