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
Ozzy Osbourne to the other band members. Osbourne claims his drug use and alcohol consumption at that time was not better nor worse than that of the other band members. The band replaced him with former Rainbow singer Ronnie James Dio. Conflict of a sort had existed between Iommi and Osbourne from the beginning. When responding to a 1969 flyer reading "Ozzy Zig Needs Gig- has own PA" posted in a record store, Iommi and Ward arrived at the listed address to speak with "Ozzy Zig." When Iommi saw Osbourne emerge from another room of the house, he left upon discovering it