Bong-Ra
Netherlands · last active 2026
Solo vehicle of Dutch producer Jason Köhnen, who cut his teeth in death-doom band Celestial Season before founding Bong-Ra in 1996 as one of the first projects to weld extreme-metal riffing to breakcore's stutter-edited breakbeats. Three decades on, the project has swung from jungle/gabber assault (Full Metal Racket, Grindkrusher) through a 'crushing, ritualistic experimental doom' phase indebted to Om and Sunn O))) (Antediluvian, Meditations), alongside side-projects in doomjazz. Now signed to Debemur Morti Productions, 2025's Black Noise pushes toward industrial metal while keeping the breakcore DNA intact.
SCORE PROFILE
Accent numbers counted towards the index. Hover an axis — or hold it on a phone — for what it means.
WHY THOSE SCORES
- Jazzy 3 — Köhnen co-founded the doomjazz side-projects Kilimanjaro Darkjazz Ensemble and Mount Fuji Doomjazz Corporation, feeding jazz-harmony sensibilities back into his main output (debemur-morti.com artist bio).
- Glitch 8 — Founded Bong-Ra in 1996 'pioneering the intense Breakcore genre of electronica' and fusing extreme metal with electronic stutter-editing (debemur-morti.com artist bio).
- Drone 5 — Recent albums Antediluvian (2018) and Meditations (2022) turned Bong-Ra into 'a crushing, ritualistic experimental doom act... with some similarities to acts like Om, Sunn O))), or Colin Stetson' (spinaltapdance.substack.com).
- Ambient 4 — Same ritualistic-doom phase (Antediluvian, Meditations) draws comparison to atmospheric/drone acts Om and Sunn O))) (spinaltapdance.substack.com).
MEMBERS
- Jason Köhnenall instruments, production, vocals (solo project)
CONNECTIONS
- Author & Punisherpath →
Bong-Ra remixed Author & Punisher's 'Terrorbird' and 'Flesh Ants' on the Sonic Terror X 12-inch (2014) — a remix record, not a split source ↗
- James Plotkinpath →
James Plotkin mastered Bong-Ra's "Antediluvian" (2018, "Mastered By"). source ↗
- All Are to Returnpath →
Shared label roster: Tartarus, per MusicBrainz. source ↗
- Author & Punisherpath →
Shared label roster: Sonicterror Recordings, per MusicBrainz. source ↗
- Bastard Noisepath →
Shared label roster: Grindcore Karaoke, per MusicBrainz. source ↗
- Blut aus Nordpath →
Debemur Morti Productions artist (Esoterik; To Mega Panopticon; Black Noise, 2025) — anchored at Blut aus Nord, the band of label founder Vindsval. source ↗
- Boredomspath →
Shared label roster: Very Friendly, per MusicBrainz. source ↗
- Combat Astronomypath →
Shared label roster: Ad Noiseam, per MusicBrainz. source ↗
- Igorrrpath →
Shared label roster: PRSPCT RVLT, per MusicBrainz. source ↗
- Merzbowpath →
Shared label roster: Very Friendly, per MusicBrainz. source ↗
- Scornpath →
Shared label roster: Ad Noiseam, per MusicBrainz. source ↗
FURTHER LISTENING
Nearest score profiles in the atlas.
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Scorn is an experimental industrial, dub, and isolationist project formed in Birmingham, England, in 1991 by drummer Mick Harris and vocalist/bassist Nic Bullen, both former members of grindcore pioneers Napalm Death. Beginning as an industrial metal band on the 1992 debut Vae Solis, the project rapidly moved away from its metal roots toward dark dub, hip-hop, and post-industrial ambient, notably on 1994's Evanescence. Bullen left in April 1995, after which Harris (also of Painkiller with John Zorn and Bill Laswell) continued Scorn as a solo vehicle focused on extremely low, heavy bass frequencies.
- Turner-verse / Hydra HeadEI 20GreymachineGlitchDoomDrone
Greymachine is an experimental industrial noise project formed in 2006, built around Godflesh and Jesu frontman Justin Broadrick and Isis frontman Aaron Turner, with bassists Dave Cochrane (Head of David) and Diarmuid Dalton (Jesu). Broadrick described it as needing "something black to Jesu's white," pairing crushing beats, dissonant guitar, and harsh electronics. Their debut album Disconnected was produced by Broadrick and released on 4 August 2009 via Turner's label Hydra Head Records.
- UnaffiliatedEI 25MonnoGlitchDroneDoom
Swiss experimental noise/drone outfit (later based partly in Berlin) built around Antoine Chessex's tenor saxophone skronk, Gilles Aubry's laptop electronics, and a bass/drums engine that pushes doom and sludge toward pure noise abstraction. Active roughly 2000-2013 across releases like Error, Ghosts, and Cheval Ouvert, they sit closer to noise-rock/free-improv lineages (Throbbing Gristle, Wolf Eyes, Lightning Bolt comparisons) than to conventional metal songwriting.
- Post-metalEI 25Corrections HouseGlitchDoomAmbient
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.
- Southern Lord / droneEI 25MerzbowGlitchDroneAmbient
Merzbow is the project of Japanese musician Masami Akita, the most prolific and definitive figure in harsh noise, working in distortion, feedback, synthesizers and homemade noisemakers since the late 1970s. His vast collaborative discography connects him deep into this atlas: he has recorded with Boris continuously since 1997 (Megatone, Gensho, 2R0I2P0), mixed the tracks "O)))Bow 1/2" on Sunn O)))'s Flight of the Behemoth (2002), and later performed live with Sunn O))) at Tokyo's Earthdom in 2007. His early-career work also included collaborations with KK Null.
- Southern Lord / droneEI 24James PlotkinGlitchDroneDoom
James Plotkin is an American guitarist, bassist and producer who has been a fixture of extreme and experimental music since the late 1980s, moving from grindcore into drone metal, industrial, noise and dark ambient. He co-founded the extreme-doom band Khanate in 2000 with fellow OLD member Alan Dubin, and played guitar and guitar-synth in Mick Harris's project Scorn from 1994 to 1997. Beyond his own bands he is one of the scene's busiest producers and mastering engineers, his name appearing on countless works of underground extreme music.
- UnaffiliatedEI 23ZonalGlitchDroneAmbient
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.
- UnaffiliatedEI 18Roxy RadclyffeGlitchTechnicalDrone
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.
- UnaffiliatedEI 17Black MayonnaiseDoomDroneGlitch
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'.)
- Southern Lord / droneEI 25OLDGlitchTechnicalAmbient
OLD (an acronym for Old Lady Drivers) was a New Jersey band formed in 1986 by James Plotkin and Alan Dubin out of the remains of Plotkin's grindcore act Regurgitation, releasing its self-titled debut of tongue-in-cheek grindcore on Earache Records in 1988. Across subsequent records the group shed its grind roots for avant-garde and industrial metal on Lo Flux Tube (1991) before shifting almost entirely into techno, industrial and electronica on its final album Formula (1995), by which point OLD had contracted to a Plotkin/Dubin duo. This dramatic grind-to-electronic transformation makes OLD an era-split candidate in the atlas. After OLD dissolved, Plotkin and Dubin went on to form the experimental doom band Khanate.