Black Sabbath
A horror movie playing across the street from their rehearsal space gave a Birmingham blues band its name, its opening track, and -- almost by accident -- an entire new genre of music.
By Song Reviews · October 29, 2026
Greatest of All Time!A horror movie playing across the street from their rehearsal space gave a Birmingham blues band its name, its opening track, and -- almost by accident -- an entire new genre of music.
Before they were Black Sabbath, Tony Iommi, Ozzy Osbourne, Geezer Butler, and Bill Ward were a blues-rock outfit called Earth, playing the same circuit as a dozen other British bands chasing the same influences. The rename, and the direction that followed it, trace back to something almost incidental: a movie house across from the band’s rehearsal space was screening Black Sabbath, a 1963 Boris Karloff horror anthology, and the title stuck with them enough that they adopted it for both the band and, in 1969, the opening track of their self-titled debut album.
The song itself – built on a tritone interval, the “diabolus in musica” long associated in Western music theory with dread and instability, which Iommi called “the devil’s interval” – was a direct attempt to translate the feeling of watching a horror film into a riff. Released February 13, 1970, a Friday, the album’s title track leads with tolling bells, pouring rain, and Osbourne’s voice describing an encounter with a literal figure in black, before Iommi’s riff drops in behind it. It is widely credited, more than any other single recording, as the moment heavy metal became identifiable as its own genre rather than an especially heavy strain of blues rock.
The connection to Karloff is coincidental in the most literal sense – a marquee the band happened to walk past – but it places “Black Sabbath” in unlikely company with a very different horror-indebted record from eight years earlier: Bobby Pickett’s “Monster Mash,” also reviewed in this week’s run, built from the same actor’s horror persona into a novelty hit rather than a new genre. Two records, decades and genres apart, both tracing back to the same cultural source material, arriving at opposite ends of what horror could do to popular music.
Greatest of All Time. The song most often credited with inventing heavy metal as a genre, born from a band walking past a horror movie marquee.
Hero image: “Black Sabbath” (1970) album cover art, Vertigo/Warner Bros. Records. Used under fair use for editorial commentary.