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
Boss (Australian band) Marlowe on bass guitar (ex-Heaven) disbanded. In the following year Csongrady, Heckenberg and Pratt founded another hard rock group, BB Steal, in Sydney. In 2003 Csongrady co-wrote "United Forever", the theme song for Adelaide United FC. Boss (Australian band) Boss were a hard rock band, which formed in 1979 in Adelaide. Long term members were Craig Csongrady on lead vocals and Kevin Pratt on lead guitar. The group issued a sole album, "Step on It", in October 1984 before disbanding in 1986. Three members from the final line-up, Csongrady, Pratt and Peter Heckenberg (drums), founded another hard rock group, BB