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The Black Sabbath Story Vol. 1 - 1970–1978: is a documentary about the heavy metal band Black Sabbath that recounts their history from the days of "Earth" (one of their first names), to the separation with Ozzy Osbourne. A DVD version has been released in 2002, with 35 minutes of additional footage, including a promotional video of "A Hard Road" not included in the previous VHS version. imdb.com