10 Classic Rock Songs That Push The 7-Minute Mark

4. Wheels Of Confusion/The Straightener - Black Sabbath

http://youtu.be/AZkq5pd9WpQ If ever there was a song that defined the morose, doom-laden sound Black Sabbath perfected beyond anyone else, this is it. Tony Iommi€™s guitar opens with a barrage of moaning, sludgy riffage before launching into a crushing performance from the entire band. What begins as a near-ballad turns into something an army could march to. As Ozzy wails like a flag billowing in the wind above such an army, Tony, Bill and Geezer are almost painful in their tightness €“ the song builds and builds on its frantic nature, offering movement upon movement that€™s faster, harder and heavier than the last until the very end.