Audioslave was an American hard rock supergroup that formed in Los Angeles, California in 2001. It consisted of then-former Soundgarden frontman, rhythm guitarist, and lead singer Chris Cornell and the then-former instrumentalists of Rage Against the Machine: Tom Morello (guitar), Tim Commerford (bass and backing vocals) and Brad Wilk (drums). Critics initially described Audioslave as an amalgamation of Rage Against the Machine and Soundgarden, but by the band's second album, Out of Exile, it was noted that they had established a separate identity.
The band's trademark sound was created by blending 1970s hard rock with 1990s alternative rock. Moreover, Morello incorporated his well-known, unconventional guitar solos into this mix. As with Rage Against the Machine, the band prided themselves on the fact that all sounds on their albums were produced using only guitar, bass, drums and vocals.
After Audioslave released three successful albums, received three Grammy nominations, and became the first American rock band to perform an open-air concert in Cuba, Cornell issued a statement in February 2007 announcing that he was permanently leaving the band "due to irresolvable personality conflicts as well as musical differences". As the other three members were busy with the Rage Against the Machine reunion, and Morello and Cornell had each released solo albums in 2007, Audioslave was officially disbanded.