Unearthing the Heaviest Sabbath: The Story Behind the Black Sabbath Dehumanizer Demos
By 1990, Black Sabbath was in a state of commercial limbo. The Tony Martin-led era had produced some exceptional music ( Headless Cross , Tyrant ), but the band was struggling to fill arenas, particularly in the United States. Geezer Butler had recently reunited with Iommi on stage during the Tyrant tour, sparking conversations about a deeper collaboration.
Bootlegs like The Dehumanizer Demos (a limited 3-CD release from Japan) include multiple takes of "Computer God," "Letters From Earth," and "Master of Insanity". black sabbath dehumanizer demos
This song underwent one of the most drastic transformations.
Here is a detailed breakdown of the content regarding the Dehumanizer demos, including their history, recording process, and circulation. Unearthing the Heaviest Sabbath: The Story Behind the
This track actually originated from Geezer Butler’s solo project (The Geezer Butler Band) from his time away from Sabbath. The demo versions are incredibly stripped-down, showcasing the fundamental skeleton of the song. Hearing Iommi adapt his playing style to a riff written by Butler is a masterclass in collaboration.
As noted in extensive fan analyses, the 1986 version of "Computer God" shares almost nothing with the final Dehumanizer track lyrically, though the music is similar. Meanwhile, the 1986 "Master of Insanity" is musically "very, very similar" to the version on the album. These demos featured a very different lineup from the one that would record the album, with Geezer Butler on bass, Carl Sentence on vocals, Pedro Howse on guitar, Gary Ferguson on drums, and Jezz Woodroffe on keyboards. These tracks were so old that the band revisited them years later for the Dehumanizer album. Bootlegs like The Dehumanizer Demos (a limited 3-CD
Dehumanizer is widely regarded as Black Sabbath's heaviest album. The demos strip away the clinical 90s studio production, exposing the raw power of Iommi’s riffs and the sheer grit in Dio’s voice.
Due to the unofficial nature of these releases, the Dehumanizer demos exist primarily on bootlegs and collectors' forums, such as Discogs . They are highly sought after because they offer the most unvarnished, "heavy" iteration of the Dehumanizer era, showcasing a darker, more experimental Black Sabbath.
Interestingly, some of the Dehumanizer material originated outside the main Sabbath sessions: