"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.

Tony Iommi, British heavy metal band Black Sabbath’s co-founder and guitarist is of the opinion that his late bandmate Ozzy Osbourne waited to perform at the band’s farewell concert before passing away. Osbourne, who died on July 22, performed at Villa Park in Birmingham, UK, on July 5 with the original members, Iommi, Geezer Butler and Bill Ward.

Osbourne, who battled Parkinson’s before his death, sat onstage in a black leather chair as he performed for the 42,000-person crowd. He sang five songs by himself, before he was joined by his former bandmates for four Black Sabbath songs.