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
Vol. 4 (Black Sabbath album) Vol. 4 (Black Sabbath album) Vol. 4 is the fourth studio album by English rock band Black Sabbath, released in September 1972. It was the first album by Black Sabbath not produced by Rodger Bain; guitarist Tony Iommi assumed production duties. Patrick Meehan, the band's then-manager, was listed as co-producer, though his actual involvement in the album's production was minimal. In June 1972, Sabbath began work on their fourth album at the Record Plant studios in Los Angeles. "It's the first album we've produced ourselves," observed Ozzy Osbourne. "Previously we had Rodger Bain as a producer – and, although he's