Black Sabbath Dehumanizer Demos |top| [ ULTIMATE ◆ ]

In late 1990 and throughout 1991, this resurrected beast retreated to Rich Bitch Studios in Birmingham, England, and later to various rehearsal spaces, to write. The resulting demo tapes, which have circulated among tape-traders and bootleg collectors for decades, document a band shedding the polished, melodic rock of the late 80s in favor of something sinister, contemporary, and devastatingly heavy. The Sound of the Demos: Raw Power vs. Studio Polish

The earliest Dehumanizer demos feature Cozy Powell on drums. Recorded throughout 1991, these tracks are highly sought after by collectors for their drastically different arrangements, unpolished energy, and completely different vocal melodies. The Musical Aesthetic

Demos from 1986 reveal that "Computer God" and "Master of Insanity" were originally Geezer Butler solo tracks featuring vocalist Carl Sentance.

You can hear the frustration in Ozzy’s missed cue. You can hear Bill’s drums wheeze before a fill. You can hear Tony’s amp feedback as he waits. You can hear Geezer laughing at a wrong note. black sabbath dehumanizer demos

| Disc | Focus & Content | | :--- | :--- | | | Raw instrumental rehearsals from before Dio's full involvement. Features multiple takes of "Computer God," "Letters From Earth," and several "Unknown" untitled jams, providing a peek into the songwriting process. | | Disc 2: Geezer Butler's Band Demos & Dehumanizer Demos With Vocals | Includes early versions of "Master of Insanity" and "Computer God" from a Geezer Butler solo project in the mid-80s (featuring a completely different band). Also contains Dio-fronted demos for "Letters From Earth," plus the unreleased gems "Bad Blood" and "The Next Time". | | Disc 3: Rehearsals & Ron-era Demos (1991-1992) | Captures the band in a more interactive state, with multiple takes of "Computer God" (some instrumental, some with Dio). Includes rare studio chatter (like a conversation between Cozy Powell and Ronnie) and more unknown instrumental tracks. |

While many recordings are shrouded in mystery, a clear picture of the demo sessions has emerged from bootlegs and fan knowledge. The following table, based on information from a detailed 3-CD bootleg set called Dehumanizer Rehearsals - Studio Rehearsals & Demos 1991-1992 , outlines a likely structure of the sessions. This set is divided into three thematic discs that chart the album’s evolution.

The album opener is a masterclass in slow, robotic groove. The demo strips away the keyboard atmospherics and the layered "choir" effects on Ozzy’s voice. Here, the song is skeletal. Tony Iommi’s guitar is monstrously loud in the left channel, with Geezer’s bass rumbling like tectonic plates in the right. In late 1990 and throughout 1991, this resurrected

Musically, the demos are often preferred by some purists for their unfiltered aggression . While the final Dehumanizer

The demo sessions for Black Sabbath's 1992 album Dehumanizer

Powell’s drumming style was inherently different from original Sabbath drummer Bill Ward or Vinny Appice. He brought a driving, thunderous rock groove to the table. The demos recorded with Powell showcase a version of Dehumanizer that felt more aligned with late-80s power metal than the doom-laden sludge the album eventually became. Tracks leaked from this era include early arrangements of: Studio Polish The earliest Dehumanizer demos feature Cozy

For those interested in exploring the Dehumanizer demos, we recommend seeking out the official bootlegs or demo compilations available online. Additionally, fans can revisit the finished Dehumanizer album, which remains a staple of Black Sabbath's discography.

In 1991, after a decade apart, the original Heaven and Hell lineup walked into the studio. No pressure, right? Wrong.

The Heavy Metal Archaeology of Black Sabbath’s Dehumanizer Demos

For decades, the Dehumanizer demos existed solely in the trading circles of cassette collectors and underground bootleg vinyl pressings, often under titles like Dehumanizer Outtakes or The Richfield Sessions .

Furthermore, Dio’s vocal takes on the demos are astonishingly aggressive. Known for his pristine, operatic delivery, the demos catch him pushing his voice into a gravelly, snarling register. On the demo version of "TV Crimes," Dio spits the lyrics with a venom that reflects his genuine frustration with the music industry and televangelists—the song's primary targets. The Unreleased Gems and Alternate Titles