California Jam, 1974

With Deep Purple and Emerson Lake & Palmer topping the bill, the California Jam, Held at Ontario Motor Speedway on April 6th 1974, is cemented in rock history as literally, one of the most powerful and loudest music festivals of all time. Black Sabbath were part of the lucky crop of bands that got to test out what was "the largest and most powerful concert sound system ever assembled." Unleashing vitrolic riffs, pounding chords and devastating demonic power to over 400,000 people, the true, colossus of Sabbath in their prime is captured here at one of the most (if not the most) insanely loud music festivals ever and nobody could have chosen a better band to test the volume levels! London Calling delivers a masterpiece of true metal power from 1974 with a completely restored and professionally remasted, vintage ABC-TV broadcast. Presented with background notes and timeline photos.