Deep Purple was the biggest selling album act in America when they embarked on a 28 date tour promoting their album BURN. The undoubted climax of this tour was headlining the California Jam Festival at Ontario Speedway in California, in front of 200,000 people. 2014 marks the 40th anniversary of this historic event. Their explosive set is presented here on CD for the first time ever. The set list includes tracks from 'Burn', as well as classics like 'Space Truckin' and 'Smoke On The Water'.