Which group of the 1970’s featured Tony Iommi on guitar, “Geezer” Butler on bass and Bill Ward on drums?
Tony Iommi had minor success in England), the group renamed themselves Black Sabbath. His factory accident affected the Black Sabbath sound; by 1970 Iommi had detuned his guitar from E to E♭ (a minor second down), and from 1971's "Master of Reality" album, had detuned it further to D♭ (a minor third down), to ease the tension on his fingers. Black Sabbath bassist Geezer Butler did the same to match Iommi. Sabbath was among the first bands to detune, and the technique became a mainstay of heavy metal music. Iommi combined blues-like guitar solos and dark, minor-key riffing with a revolutionary high-gain,
Bill Ward (musician) reuniting with Tony Iommi, Geezer Butler and Ronnie James Dio for a tour though under the moniker Heaven & Hell. However, Ward later decided not to participate in the tour or continue participation in the band because of musical differences with "a couple of the other bandmembers" and a reported concern about extended touring. On 11 November 2011, Iommi, Butler, Osbourne, and Ward announced that they were reuniting to record a new album with producer Rick Rubin and to start touring in 2012. In February 2012, however, Ward left before work commenced on "13", the first studio recording to include