AC/DC list of members that were part of the band before 1975, see List of AC/DC band members. AC/DC AC/DC are an Australian rock band formed in Sydney in 1973 by brothers Malcolm and Angus Young. Their music has been described by music journalists as hard rock, blues rock, and, controversially, heavy metal; the group have defined themselves as "a rock and roll band, nothing more, nothing less". AC/DC underwent several line-up changes before releasing their first album, "High Voltage", in 1975. Membership subsequently stabilised until Cliff Williams replaced Mark Evans as bassist in 1977 for the album "Powerage". In February
Rock music in Australia hard rock music the world over. From their humble beginnings, Scottish brothers Angus and Malcolm Young forged a hard-hitting, ball-breaking pub guitar sound, similar to Alex Harvey but tougher. When Bon Scott joined the band to lend his unique vocal talent, the band began their 'long way to the top', shooting to the top of the Australian rock scene in 1974–75 and their song "It's a Long Way to the Top (If You Wanna Rock 'n' Roll)". The band later achieved international success, especially with the release of their album "Highway to Hell". This was to be Bon Scott's last