The anticipation for new Metallica output had always been pretty high, but thanks to the reaction to the release of “One” as a single and video in 1989, anticipation for 1991’s Metallica was at fever pitch -- and the lead single “Enter Sandman” only made it bigger. Its trademark intro, written off the cuff by Kirk Hammett, is one of Metallica’s best moments, and is recognizable around the world. A marked departure from the length and prog of ...And Justice for All, “Enter Sandman” is a burst of stadium level metal that, once away from the buildup intro, never lets up (outside of a breakdown near the end which brilliantly utilizes that famous “now I lay me down to sleep” bedtime prayer in such a way to add to the scary movie aspect of the song). Lyrically, the song was built around one of James Hetfield’s weird song titles laying around, and centers around nightmares and all that come with them. Once released, the song took on a life of its own, becoming one of the most recognizable songs of all time, not just in metal but in rock in general.