Vol. 4

Vol. 4 is Black Sabbath’s fourth album, a record that keeps the band’s heavy, ominous riff language intact while greatly widening its palette of tone, structure, and feeling. Tony Iommi’s guitar creates short, cutting propulsion in “Tomorrow’s Dream” and a powerful rolling surge over the bouncing rhythm of “Supernaut.” Geezer Butler’s bass and Bill Ward’s drums do more than sit low and heavy: they give every song a different groove and strain, while Ozzy Osbourne’s vocal brings fragility and anxiety into the weight around him. From the cold downward pull of “Snowblind” and the pressure of “Cornucopia” to the determined final stretch of “Under the Sun,” the album refuses to limit heaviness to one speed or one expression. The piano-and-voice stillness of “Changes” and the open space of the instrumental “Laguna Sunrise” make the surrounding riffs feel even larger. Because intensity and delicacy, physical groove and unstable atmosphere all live together, the playing of the four musicians becomes strikingly three-dimensional. The album points toward later doom and stoner rock, yet it also proves that Black Sabbath were never merely a low-end-heavy band. They could shape the light and shade inside a song itself, and Vol. 4 remains one of the clearest records of that power.