Malcolm Young AC/DC had moved to Melbourne. In early 1977 they returned to Britain and began a European tour with Black Sabbath. While Bon Scott and Ozzy Osbourne quickly became friends, relations were less than cordial between the other members of the respective bands. In one incident, Geezer Butler pulled a knife on Malcolm Young. Towards the end of 1977, bassist Mark Evans was fired; purportedly to find someone who could sing backup vocals. Evans described disagreement with Angus and Malcolm as a contributing factor. He was replaced by Cliff Williams. In 1988, Young missed the majority of AC/DC's Blow Up Your
George Young (rock musician) duo with Vanda in 1970, as Vanda & Young, initially living in London. They provided pop and rock songs for other recording artists, and for themselves under various stage names: Paintbox, Tramp, Eddie Avana, Moondance, Haffy's Whiskey Sour, and Band of Hope. The pair worked with Young's elder brother Alex in Grapefruit. Young and Vanda returned to Sydney in 1973 where they worked for Ted Albert, at his Albert Productions recording studio to become the in house producers. One studio-based group, Marcus Hook Roll Band, was joined in 1974 by Young's brothers, Malcolm and Angus. The brothers had already formed