Bassist Terence “Geezer” Butler, guitarist Tony Iommi, lead singer Ozzy Osbourne, and drummer Bill Ward were all between the ages of 18 and 20 when they began playing together in Birmingham. Naming themselves after an Italian horror film in early 1969,

In fact, the normally elusive Butler appears to give his full blessing to the outrageous, profanity-laden reality show, which, for a few seasons, afforded viewers a sneak peek into the “private life” of one of rock ‘n’ roll’s most legendary madmen.

The last album Black Sabbath released, 13, came out in 2013, and the band has some mixed feelings about the finished product.Tony Iommi, in particular, didn’t love producer Rick Rubin‘s ...