Ozzy Osbourne left behind a very heavy legacy. Here's a look at his best songs, from Black Sabbath's "Paranoid" to "Crazy Train" and "Mr. Crowley."

Black Sabbath, the band that Osbourne famously fronted, played their first U.S. gig at Rowan University. The school shared a flier from the band's inaugural stop in the states and a cheeky story about the gig. Black Sabbath played their first U.S. gig on Oct. 30, 1970 at the then-Glassboro State University.

In an essay for The Sunday Times, Butler revealed that in real life, Osbourne was the opposite of his onstage madman persona. “To me, Ozzy wasn’t the Prince of Darkness — if anything, he was the Prince of Laughter. He’d do anything for a laugh, a born entertainer,” Butler wrote.