G eezer Butler, the founding bassist of Black Sabbath, revealed how the band’s final concert came together weeks before Ozzy Osbourne ‘s death. In a tribute written for the Times of London, Butler said he was initially taken aback by Osbourne’s appearance when the band came in for rehearsals.

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,