AC/DC are 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 themselves call it simply "rock and roll". AC/DC have sold more than 200 million records worldwide, including 75 million albums in the United States, making them the ninth-highest-selling artist in the United States and the 16th-best-selling artist worldwide. Back in Black has sold an estimated 50 million units worldwide, making it the third-highest-selling album by any artist, and the highest-selling album by any band. The album has sold 22 million units in the US, where it is the sixth-highest-selling album of all time. AC/DC ranked fourth on VH1's list of the "100 Greatest Artists of Hard Rock" and were named the seventh "Greatest Heavy Metal Band of All Time" by MTV. In 2004, AC/DC ranked No. 72 on the Rolling Stone list of the "100 Greatest Artists of All Time". Producer Rick Rubin, who wrote an essay on the band for the Rolling Stone list, referred to AC/DC as "the greatest rock and roll band of all time". In 2010, VH1 ranked AC/DC number 23 in its list of the "100 Greatest Artists of All Time".
