Black Sabbath retired following an extensive farewell tour from 2016 to 2017. The shows featured three of the band’s four founding members – singer Ozzy Osbourne, guitarist Tony Iommi and bassist Geezer Butler – but not original drummer Bill Ward, who pulled out of the band several years earlier due to a contract dispute.

Tony Iommi has been Black Sabbath’s keeper of the flame. He is “Master Of The Riffs” — some say he invented heavy metal — and he is the only band member to stay the course.