Slash said he had been discussing a possible studio collaboration with Ozzy Osbourne shortly before Osbourne’s death. The project never happened, making the account a further indication of plans and relationships left unfinished after the Black Sabbath singer’s final concert.

At the Back to the Beginning show, described as Osbourne’s last performance, Slash introduced Guns N’ Roses singer Axl Rose to Osbourne for the first time. Slash said both musicians admired each other, and recalled that he and Osbourne had spoken by phone about working together roughly a week after the concert; Slash was touring with Guns N’ Roses when he received news of Osbourne’s death.