Black Sabbath | California Jam 1974 | CD

Black Sabbath is a band formed in Birmingham, UK, in 1968 by Tony Iommi, Ozzy Osbourne, Geezer Butler and Bill Ward. Considered by many to be the first heavy metal band, its original line-up lasted until 1979, after which Ronnie James Dio replaced Osbourne.

California Jam 1974 is a 1 CD unofficial release by Black Sabbath, issued by London Calling in June 2025. The recording is of a performance at California Jam I, held at Ontario Motor Speedway, CA, USA, on 6 April 1974. The release is categorised as hard rock and heavy metal.