Inside Black Sabbath A Critical Review 19701992 (2002)

Using rare previously unreleased film of the original Ozzy Osbourne lineup from 1971 never before available on DVD this superb independent film sets out to discover what makes a great band and poses the tricky question who was the best Sabbath singer Ozzy Dio or Martin Also featured are extensive interviews with Tony Iommi Neil Murray alongside leading music critics and working musicians