Brad Wilk was a member of Greta in January of 1990.
 After a brief South America tour in 2010, they created their own festival, LA Rising, which they headlined on July 30, 2011
 A short while after, the duo met Zack de la Rocha while he was rapping freestyle in a club, and through him, bassist Tim Commerford (a childhood friend of de la Rocha)

