Before Ozzy Osborne became a spokesman for a butter substitute and the star of the funniest Pepsi commercial ever made, he was the lead singer for perhaps the greatest heavy metal band of all time – Black Sabbath. These guys are probably older than your parents now, but they were the cutting edge of bad (in a good way) back in the 70's and 80's.

Dark lyrical themes combined with pounding guitar and percussion-heavy tracks made these guys the kings of the counter-culture, heavy metal movement. I mean, Ozzy bit the head off a freakin' live bat once on stage. You can't get much more metal than that.

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