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."

Geezer Butler penned an emotional tribute to Ozzy Osbourne. Days after the Black Sabbath frontman died at age 76, Butler reflected on his 57-year friendship with the singer, which started when Osbourne showed up at his doorstep barefoot,

Osbourne died on Tuesday at 76, just weeks after he and Black Sabbath performed at their farewell Back to the Beginning concert earlier in July.