Greymachine

Old Man Gloom is an experimental sludge/post-metal supergroup formed in 1999 in Santa Fe, New Mexico by Aaron Turner (Isis) and drummer Santos Montano, later expanding with musicians from the Boston hardcore and metalcore scene. Their music juxtaposes crushing sludge and hardcore with noise, drone, and ambient soundscapes. Bassist/vocalist Caleb Scofield died in a car accident in March 2018; Stephen Brodsky, his Cave In bandmate, subsequently joined the band. Their albums have appeared on labels including Hydra Head Records (and its Tortuga imprint), founded by Aaron Turner, as well as Profound Lore.

Corrections House is an American industrial-sludge supergroup formed in 2012, bringing together Scott Kelly of Neurosis, Mike IX Williams of Eyehategod, Sanford Parker, and Bruce Lamont of Yakuza. The group methodically creates and destroys through dark, apocalyptic soundscapes built from riffs, saxophone, electronic loops, and Williams' corroded vocals. They released their debut album Last City Zero (2013) and its follow-up Know How to Carry a Whip (2015) on Neurot Recordings.

Zeni Geva are a Japanese noise-rock band formed in Tokyo in 1987 by guitarist-vocalist KK Null (Kazuyuki Kishino), built on brutal, minimalist, detuned riff-machines and Null's harsh electronics. Steve Albini produced their 1991 album Total Castration and performed on the 1993 live document All Right You Little Bastards, and Jello Biafra released them on Alternative Tentacles; their 2001 album 10,000 Light Years appeared on Neurosis's Neurot Recordings. The long-running trio settled around Null, Ruins drummer Tatsuya Yoshida, and (for over two decades) guitarist Mitsuru Tabata.

Zonal are the British duo of Justin Broadrick (Godflesh) and Kevin Martin (The Bug), a reactivation of their 1990s Techno Animal partnership trading in cavernous bass, cacophonous dub and ear-splitting drone. Their debut album Wrecked was released on Relapse Records on 25 October 2019, with Philadelphia poet-vocalist Moor Mother featured across its first six tracks. The record was mastered by Stefan Betke (Pole) and pairs industrial hip-hop menace with drone-metal weight.

System Error (ft. Moor Mother)play in the dock

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Godflesh are an English industrial metal band from Birmingham, formed in 1988 by Justin Broadrick and G.C. Green, evolving out of the earlier group Fall of Because. Through their fusion of hip hop-derived drum-machine programming, downtuned metal riffs, and industrial dissonance - heard on their acclaimed debut album Streetcleaner (1989) - they developed a sound widely regarded as foundational to industrial metal and post-metal. Broadrick had earlier drummed in Napalm Death, and the band signed to Earache Records before disbanding in 2002 and reuniting in 2010.

Head of David were a Birmingham-area experimental/industrial-metal band formed in 1986 and signed to Blast First, whose abrasive noise-rock was once described as being about as harsh as music can get 'without descending into pure noise.' Their releases include Dustbowl (1988) and Seed State (1991). Justin Broadrick drummed for the group from 1987 to 1989, a stint between his early stretch in Napalm Death and the founding of Godflesh.

North Carolina solo producer (Roxanne Jonas Radclyffe) whose December 2024 album VIRLGOID pairs maximalist, self-mixed/mastered production with metal riffing and a fragmented trans-vigilante narrative concept; RateYourMusic tags the record Avant-Garde Metal/Post-Metal, and her own Bandcamp genre tags span deathstep, drone metal, industrial metal, nu metal and "metamodernism." One of dozens of aliased projects in a prolific, DIY internet-native discography.

Author & Punisher is the one-man industrial/drone/doom-metal project of San Diego mechanical engineer Tristan Shone, who performs on custom-designed and hand-fabricated instruments he calls 'Drone Machines' and 'Dub Machines'. Handpicked by Tool to support their 2020 tour, Shone returned the favor on his 2022 Relapse album Krüller: Tool's Danny Carey drums on 'Misery' and bassist Justin Chancellor plays on 'Centurion'. The result pairs monolithic, machine-driven weight with dub space and industrial menace.

Miseryplay in the dock

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Black Mayonnaise is the long-running one-man bedroom project of Mike Duncan from Akron, Ohio, active since August 1991. It blends heavily detuned, distorted doom/sludge guitar with drum-machine programming, tape loops and cut-up sonic manipulation into a lo-fi, ambient/psych-drone-inflected sound. Cited influences include old Godflesh, old Carcass, Butthole Surfers and Big Black; notable releases include TTSSATTSR (2004) and the retrospective compilation When You Get Caught Between the Moon and Boston Harbor (2011). (Verified spelling: the RYM scout note had a typo, 'Black Mayonaise' — the real band spells it 'Black Mayonnaise'.)

Abishai is the lo-fi noise-rock vehicle of Torrance, California multi-instrumentalist Abishai Smith (aliases DJ Bathtub, Eden, Mizpah), who splatters feedback, drum machines, and kazoo across deliberately unpolished sludge, no wave, and noisecore excursions. The 43-track 'Raw and Legendary!!!' (2017) is a maximalist, comedic blowout of punk-metal bits, while the wider catalog under various aliases swings into death industrial, drone, power electronics, and ambient territory — DIY extremity closer to a bedroom noise scene than conventional metal songcraft.