An Australian rock band formed in Sydney in 1973 by Scottish-born brothers Malcolm and Angus Young. Their music has been variously described as hard rock, blues rock, and heavy metal, but the band members describe their music as "rock and roll".
They underwent several changes before releasing their first album, High Voltage, in 1975. The Band consists of Young brothers, singer Bon Scott, drummer Phil Rudd, and bass player Mark Evans. Evans was replaced by Cliff Williams in 1977 for the album Powerage. In February 1980, a few months after recording the album Highway to Hell, lead singer and co-songwriter Bon Scott died of acute alcohol poisoning. The group considered disbanding but stayed together, bringing in Brian Johnson as replacement for Scott. Later that year, the band released their first album with Johnson, Back in Black, which they dedicated to Scott's memory. The album launched them to new heights of success and became one of the best selling albums of all time.