In 2015, the US Library of Congress selected Black Sabbath for preservation in the National Recording Registry, deeming it “culturally, historically, or aesthetically significant.” The album that critics once called a “sad joke” now sits alongside the works of Beethoven and Louis Armstrong.

An original bonus track on US pressings (not on the original UK vinyl). This song is crucial. It’s the first time Geezer Butler’s sharp, politically aware lyrics come to the fore, attacking war, pollution, and hypocrisy: “People going nowhere, taken for a ride / Looking for the answers that they know they cannot find.” Musically, it’s a rollercoaster of tempo changes, from frantic galloping to slow, crushing doom.

Named after an H.P. Lovecraft story, this song is pure proto-thrash at its core. It speeds up, driven by Ward’s manic drumming and Iommi’s power-chord attack. The lyrics tell of a dreamer whose soul becomes a star. It’s chaotic, messy, and glorious.

Black Sabbath, originally a blues-rock band called Earth, was losing gigs to louder, flashier acts. In a moment of desperation, guitarist Tony Iommi, vocalist Ozzy Osbourne, bassist Geezer Butler, and drummer Bill Ward decided to pivot. Butler, obsessed with the occult and the writings of Dennis Wheatley, noticed people in the audience actually liked it when the band played a dark, bluesy number called “Black Sabbath.” The band leaned into the fear, the dread, and the industrial gloom of their Birmingham surroundings—a city still scarred by WWII bombings and choking on factory smog. The album was recorded in a single day (October 16, 1969) for around £1,800 (approximately $4,000 today). Engineer Tom Allom and producer Rodger Bain captured the band playing live, with very few overdubs. The result is raw, unpolished, and possessed of a strange, cavernous reverb—largely because Trident’s studio floor was made of wood, and the drums were placed on risers that picked up every vibration.