On April 27, 1979, Black Sabbath kicked Ozzy Osbourne out of the band. He’d already actually quit once, and returned soon after, but this time it was for good. Too much booze and drugs (and in relative terms, for this to be a standout problem in late-’70s Sabbath is quite the thing), not enough focus on work, winding up the rest of the band in the studio, Ozzy had become a drag on a band already struggling. During the making of 1978’s Never Say Die! album, morale was at a low, inspiration was in even shorter supply, and Tony Iommi would be forced to lie to the faces of record company people asking for updates. “Oh yeah, going nicely,” he’d tell them, knowing that in the next room his bandmates were getting busy achieving fuck all. When it was released, the al...