"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.

Just weeks after the curtains closed on the pioneering rock band’s final gig together, frontman Osbourne died at age 76 on July 22. Now, in an essay for The Sunday Times, the bassist, 76, pulled back the curtain on his “57 incredible years of friendship” with Osbourne — from the band’s formation to its farewell concert.

Black Sabbath bassist Geezer Butler shared memories of Ozzy Osbourne's final performance before the rock legend's death at 76, reflecting on their 57-year friendship.

Geezer 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.

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.

On Tuesday, a representative for the Osbourne family announced that the rock music icon had died at the age of 76. Following the sad news, Black Sabbath bassist Geezer Butler posted a photo of frontman Ozzy during his last-ever show at Villa Park in Birmingham,

The chemistry Ozzy Osbourne had with his beloved guitarist, Randy Rhoads, was undeniable, but their incredible collaborative relationship came to an end with a fiery tragedy that claimed three lives

Ozzy Osbourne reunited with former bandmates of Black Sabbath for one final show, which "filled him with life" days before the Prince of Darkness died.