A deep-dive into the creation, chaos, and cultural impact of Black Sabbath’s 1972 masterpiece, Vol. 4 — the album that redefined heavy metal while nearly destroying the band in the process.

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 ...