Black Sabbath had left the band. Walker, who was at that time fronting a band called Mistress, flew to Birmingham from California in late 1977 to write material and rehearse with Black Sabbath. On 8 January 1978, Black Sabbath made their only live performance with Walker on vocals, playing an early version of the song "Junior's Eyes" on the BBC Television programme "Look! Hear!" Walker later recalled that while in Birmingham he had bumped into Osbourne in a pub and came to the conclusion that Osbourne was not fully committed to leaving Black Sabbath. "The last Sabbath albums were just very depressing
Heaven and Hell (Black Sabbath album) "Although Dio could belt with the best of them, Sabbath would never be the same." In his autobiography Iommi admits, "We were doing big shows and it was difficult for Ronnie to go out and stand in front of people who had seen Ozzy in that spot for ten years. Some of the kids hated it and they'd shout: 'Ozzy, Ozzy!' But eventually Ronnie won them over." In an interview with Songfacts, former Osbourne guitarist Zakk Wylde of Black Label Society dismisses the idea of the Dio-era being authentic Sabbath: "You listen to Black Sabbath with Ronnie James Dio in