An interesting piece of trivia regarding the demo sessions involves the song
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Several key tracks from the Dehumanizer sessions leaked via the famous Rich Bitch Studios bootlegs. Analyzing these tracks reveals how much the arrangements shifted before the final tape rolled. "Computer God" black sabbath dehumanizer demos
The single "I" was Black Sabbath’s defiant middle finger to the press and the music industry. The demo version is even angrier. The tempo is noticeably faster—almost punk rock aggression. Ozzy ad-libs the chorus, shouting "I... am... ME!" with a ferocity missing from the polished final.
If you are diving into these bootlegs or the official 2011 Deluxe Edition bonus tracks, look for: "Letters From Earth" (Alternate Version) : A heavier, more sprawling take than the album version "Master of Insanity" : This track originally started as a demo for the Geezer Butler Band An interesting piece of trivia regarding the demo
The demo, however, is almost punk in its aggression. The tempo is significantly faster. Appice’s hi-hats are a furious, constant wash. Geezer’s bass line during the verse is more syncopated, lurching against the guitar in a way that creates rhythmic dissonance. Iommi’s solo is shorter, nastier, and full of bent notes that threaten to fall off the fretboard. Dio’s ad-lib at the end—shouting “I! I! I!” not as a chant but as a scream of existential defiance—is chilling. The final version is a sports anthem; the demo is a nervous breakdown set to a riff.
Should we compare the to Dio's final tracks? Share public link The demo version is even angrier
This song has a convoluted history. Black Sabbath recorded "Time Machine" for the Wayne’s World soundtrack in 1992. That version is faster, glossier, and has a shouted chorus. The Dehumanizer album version is slower and heavier. The demo reveals the transition.
. Hearing the evolution from a solo project demo to a full Sabbath powerhouse is a treat for completionists. "Time Machine" (Wayne's World Version)
Collectors often seek out the bootlegs, which typically span three CDs and include a variety of instrumental and vocal takes.