premise: Brad Wilk died before being a drummer for Greta.
hypothesis: 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 . Rage Against the Machine ( also known as RATM or simply Rage ) is an American rock band from Los Angeles , California . 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 .