Black Sabbath is the debut studio album by English heavy metal band Black Sabbath. Released on 13 February 1970 in the United Kingdom, and later on 1 June 1970 in the United States, the album reached number eight on the UK Albums Chart and has been recognised as the first main album to be credited with the development of the heavy metal genre. Ozzy Osbourne – vocals, harmonica on "The Wizard" Tony Iommi – guitar Geezer Butler – bass Bill Ward – drums Rodger Bain – production, Jew's harp on "Sleeping Village" Tom Allom – engineering Barry Sheffield – engineering Marcus Keef – graphic design, photography