George Young (rock musician) a hard rock group, AC/DC, in 1973. Young helped them with AC/DC, which went on to become a success internationally. He declared to his brothers "that he didn't believe a band can ever call itself a band until it's done at least "200" gigs". With Vanda he co-produced AC/DC's early albums, "High Voltage" (1975), "T.N.T." (1975), "High Voltage" (1976), "Dirty Deeds Done Dirt Cheap" (1976), "Let There Be Rock" (1977) and "Powerage" (1978). Young briefly played as AC/DC's bass guitarist for a short stint, early in their career. He produced AC/DC's 2000 album, "Stiff Upper Lip". Malcolm was replaced in
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