Sum Of R

Ghostmass (大鬼眾) is a Beijing improvisation collective formed in 2021 from a shared passion for drone, doom, and extreme metal, filtered through harsh noise and free improvisation. Reviewer Michael Scharf (Outside Noise) describes their 2024 album 'Ghost Meditation' as evolving from chaotic noise toward a more structured, doom-metal-inspired sound, with anguished throat-singing-style vocals over grating feedback and power electronics. The lineup draws members from Beijing noise-rock scene acts Carsick Cars and Soviet Pop.

Ufomammut are an Italian power trio formed in 1999 in Tortona, dealing in a signature strain of psychedelic sludge that spans doom, stoner, sludge and drone metal. Their music favors lengthy songs built on repeated heavy riffs, droning vocals and a heavy use of synths and sound effects, staged live with synchronized psychedelic visuals by founders Poia and Urlo's Malleus art collective. Their most recent studio albums — including Fenice (2022) and Hidden (2024) — appear on Neurosis's Neurot Recordings.

Sunn O))) is an American drone metal band formed in 1998 by guitarists Stephen O'Malley and Greg Anderson, who took their name and initial inspiration from Seattle drone pioneers Earth. Known for glacially slow, massively amplified guitar tones performed in robes amid dense fog, the duo built a shifting cast of collaborators around vocalist Attila Csihar and released landmark records including Black One (2005) and Monoliths & Dimensions (2009). Anderson and O'Malley co-founded Southern Lord Records in 1998, the label that anchors much of the experimental-metal underground. Their collaborative streak extends to albums with Boris (Altar), Ulver (Terrestrials) and singer Scott Walker (Soused, 2014).

Haiku Funeral is a ritualistic industrial/black-metal-adjacent project born in a Marseille studio on Halloween 2008, built around Bulgarian multi-instrumentalist Dimitar Dimitrov (electronics, keyboards, vocals) and American bassist/vocalist William Kopecky, with Finnish drummer David Lillkvist also credited on record. Their sound is a hallucinogenic blend of occult drone, droning doom, and cinematic/ritual ambient, colored by theremin, e-bow, spring-drum, children's harp, and sitar - one reviewer singled out the sitar-and-tribal-percussion 'Cherni Shamani' as evoking cyber-shamanic trance. Six albums deep (most recently Drown Their Moons in Blood, 2021, via Aesthetic Death), they occupy a genuinely fringe niche between black metal atmosphere and psychedelic ritual ambient.

Cherni Shamaniplay in the dock

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Kovtun is the (sur)realist noise/dark-ambient project of São Paulo, Brazil musician Raphael Mandra, active since around 2012-2013 with a large, prolific discography of atmospheric, ritualistic releases. Recent work like Black Goat (2026) layers post-metal and doom weight, calculated black metal flirtations, oppressive drone and improvised jazz textures over a dark-ambient/noise foundation. Mandra also records as Rádio Morto (citing Neurosis, Swans and Burzum as influences) and collaborated with fellow Brazilian act Umbilichaos on the 2018 album Belong to Nothing, conceived after a Neurosis show.

Opium Warlords is the solo-turned-trio outlet of Sami Albert Hynninen (Albert Witchfinder of Reverend Bizarre), stretching doom metal into extended drone-riff meditations with minimal percussion. Since 2010 he has been joined by drummer Erkki Virta and keyboardist Laura Länsimäki, though the project remains built around Hynninen's distorted bass and bleak conceptual framing. Six albums deep on Svart Records, the band trades hooks for duration, dissolving riffs into noise and silence.

Year of 584 Daysplay in the dock

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Thrones is the long-running solo project of American bassist Joe Preston, begun in 1994 and given to bass-heavy doom, avant-garde noise rock and experimental drone. Preston is a scene hub in his own right — a former member of Earth and the Melvins and a guest on Sunn O)))'s recordings — and Thrones channels that low-end lineage into one-man records like the Southern Lord compilation Day Late, Dollar Short (2005). The music pairs crushing riffs and heavily processed vocals with an eclectic, unpredictable sensibility.

Solo instrumental drone/doom/dark-ambient project by Tim Roberts (Savannah, GA). The substantial release The Prophet Killed (2013) is a concept album about a Biblical prophet, built from eight very long-form tracks (1:37 to 16:47, ~70 min) of sustained tones, slow doom-weight passages and dark-ambient atmosphere per the artist's own genre tagging (Ambient, Dark Ambient, Doom, Drone Metal, Experimental).

Khanate was an American drone/extreme doom supergroup formed in New York in 2000 by guitarist Stephen O'Malley and bassist James Plotkin, with vocalist Alan Dubin and drummer Tim Wyskida. Their glacial music paired extremely slow tempos and harsh layers of feedback with Dubin's torturous shrieking, debuting with a self-titled album on Southern Lord Records in 2001. The band split in 2006 before a surprise return with the album To Be Cruel, released via Sacred Bones Records in 2023.

Khlyst is an American experimental drone/doom project formed in New York in 2006, built around guitarist James Plotkin (Khanate, OLD, Phantomsmasher), Norwegian vocalist Runhild Gammelsæter (Thorr's Hammer), and drummer Tim Wyskida (Khanate, Blind Idiot God). Their sole album, the dually-titled "Chaos Is My Name" / "Kaos er mitt navn," was released by Hydra Head Records in October 2006. Across eight Roman-numeral-titled pieces it alternates Gammelsæter's shrieked, free-form vocals with eerie ambient guitar and percussion soundscapes.