Chris Cornell rehearsing w/ RATM

Former Soundgarden frontman Chris Cornell has recently been rehearsing with Rage Against The Machine. As everyone already knows, RATM's vocalist Zack De La Rocha quit the super-group last October, leaving them without a frontman. It's unlear if Cornell will replace De La Rocha in RATM, or if the band will go on to form a completely new musical unit.