AC/DC are an Australian rock band, formed in 1973 by brothers Malcolm and Angus Young, who have remained the sole constant members. Commonly classified as hard rock, they are considered pioneers of heavy metal and are sometimes classified as so, though they themselves have always classified their music as simply "rock and roll". To date they are one of the highest grossing bands of all time. AC/DC underwent several line-up changes before releasing their first album, High Voltage, on 17 February 1975. Membership remained stable until bassist Mark Evans was replaced by Cliff Williams in 1977 for the album Powerage. Within months of recording the album Highway to Hell, lead singer and co-songwriter Bon Scott died on 19 February 1980, after a night of heavy alcohol consumption. The group briefly considered disbanding, but Scott's parents urged them to continue and hire a new vocalist. Ex-Geordie singer Brian Johnson was auditioned and selected to replace Scott. Later that year, the band released their highest selling album, and ultimately the third highest-selling album by any artist, Back in Black.
The group has remained a major concert draw, and its albums consistently go platinum despite its never having had a Top 20 single in the U.S.
Within months of AC/DC's American success, vocalist Scott died from choking on his own vomit after an all-night drinking binge.
In January 1991 three fans were crushed to death at an AC/DC show in Salt Lake City, Utah. In late 1992, the group paid the families of the three deceased teenagers an undisclosed sum, following an out-of-court settlement. Other parties to the settlement included the convention center, the concert's promoter, and the company in charge of security.
Angus Young's school boy outfit has become such a part of rock legend that it was included in Rock Style, an exhibit at New York's Metropolitan Museum of Art, which opened in 1999.