Black Sabbath’s self-titled is for doomers. Paranoid is for boomers. Master of Reality is for stoners. Vol. 4 is for all of the above. It’s also a classic Sabbath album that hasn’t been assed out by classic rock radio playing it for fifty years. “Wheels of Confusion/The Straightener” is the type of multipart eight-minute blues metal opener that was popular at the time (see: David Bowie’s “Width of a Circle”). “Supernaut” is just one giant riff, and, with the conga solo, is the closest Sabbath ever got to Santana. The piano ballad “Changes” is Sabbath at their most sensitive. It would later be covered by soul singer Charles Bradley and used as the theme song for Netflix’s gross-out animated puberty comedy Big Mouth. “Snowblind” is supposedly not about cocaine, but, I mean, come on. “Laguna Sunrise” is one of Tony Iommi’s acoustic instrumentals that probably convinced future headbangers that making pretty music isn’t necessarily gay. Sabbath’s first three albums are the bedrock of heavy metal. But their fourth is nearly as good. And their fifth (Sabbath, Bloody Sabbath) and sixth (Sabotage) aren’t bad either.