Geezer Butler

Black Sabbath bassist also recalls the band classic that came out of a 45-minute jam session.

Bassist admits he'd have given the same answer when Black Sabbath asked drummer to play three songs per night on final tour.

Bassist says Ozzy Osbourne was right about mid-‘70s direction, while he and Tony Iommi were wrong.

Black Sabbath bassist's book arrives in June.

The two Sabbath icons lit up the games' closing ceremony.