Audioslave may be one the rare cases of remnants of 2 great bands coming together and creating an even greater band. Consisting of three quarters of Rage Against The Machine plus former Soundgarden singer Chris Cornell, Audioslave came onto the music scene with a mix of 70's Zeppelin & Sabbath warped into the year 2000 and beyond. Having Chris Cornell as their leadsinger was producer Rick Rubin's idea and the band penned no less than 21 songs in a period of 19 days, jamming and rehearsing.