premise: Brad Wilk died before helping to co-found Rage.
hypothesis: Audioslave . The four-piece band consisted of Soundgarden lead singer/rhythm guitarist Chris Cornell , and Rage Against the Machine members Tom Morello ( lead guitar ) , Tim Commerford ( bass/backing vocals ) , and Brad Wilk ( drums ) . Brad Wilk . He is best known as the drummer of the rock bands Rage Against the Machine ( 1991 -- 2000 ; 2007 -- 11 ) and Audioslave ( 2001 -- 07 ) . Wilk started his career as a drummer for Greta in 1990 , and helped co-found Rage with Tom Morello and Zack de la Rocha in August 1991 . As of 2016 , he is playing in the band Prophets of Rage , with Commerford , Morello , Chuck D , B-Real and DJ Lord . Rage Against the Machine . Formed in 1991 , the group consists of rapper and vocalist Zack de la Rocha , bassist and backing vocalist Tim Commerford , guitarist Tom Morello , and drummer Brad Wilk .