"I didn’t realize then that I would never see Ozzy again after that night," Butler writes of the July 5 "Back to the Beginning" show in England.

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.

I am so privileged to have spent most of my life with him," Terence “Geezer” Butler said of his late bandmate and friend