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Murmuüre is a French one-man avant-garde black metal project (sole member Felix Naos) whose enigmatic 2010 self-titled album was assembled over three years from a single one-hour guitar improvisation recorded in November 2006, edited and re-layered into a ritualistic sound collage. The result blends black-metal instrumentation with dark ambient, drone, noise and psychedelic textures — 'a churning, claustrophobic mix of queasy underwater black metal... glitchy, phantom drones'. It was released on Cold Void Emanations and Aurora Borealis Recordings.

Bríi is the electronic-leaning solo alter ego of Brazilian multi-instrumentalist Caio Lemos (aka Serafim), better known for his acoustic-folk black metal project Kaatayra. Where Kaatayra leans on native Brazilian folk instrumentation, Bríi fuses raw black metal blast passages with dark ambient, techno, trance and space-psychedelia, described by one Metal Archives reviewer as an 'improbable' but effective genre collision. Based in Distrito Federal, Brazil, the project has released a string of albums since 2020 via Flowing Downward and Bandcamp, including Sem Propósito (2021) and Último Ancestral Comum (2023).

London's Sea Mosquito wrap raw black metal in ambient synth haze and echo-drenched production, favoring atmospheric wash over riff-forward songwriting - tremolo guitar and drums function as background texture behind cascading, almost lead-like drumming. Their 2025 album Majestas (I, Voidhanger Records) explores religious ecstasy across cultures, with harsh vocals occasionally giving way to spoken passages in English and Arabic. They sit closer to psychedelic/atmospheric black metal than to the death-metal-adjacent avant-garde acts on this chart, but the noise-and-texture-first approach is exactly the kind of unorthodox BM the label built its name on.

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Portuguese experimental/atmospheric black metal project from Porto, self-styled 'Underwater Black Metal', built around Francisco Braga (aka Bragadast) and Artur Leão (aka Einsichtmar). Their 2022 album εἴδωλον weaves mythological narrative through drone-laden passages, tribal instrumentation (didgeridoo, berimbau, hangpan), and abrupt shifts between raging black metal and gentle ambient interludes.

Crown of Ascension is the solo experimental black metal project of UK multi-instrumentalist A. White (Oxfordshire), who is also the sole member of extreme-metal project Vessel of Iniquity and the industrial/drone/doom project Uncertainty Principle. The project blends blastbeat-driven black metal with industrial, drone and electronic textures, with cello recurring as a primary instrument alongside drum machines pushed to extreme tempos.

Isa was a solo Dutch black metal project from Arnhem, active only in 2008, releasing a single limited CD-R, Eindeloos, before disbanding. The record pairs raw, repetitive tremolo riffing with minimal, ambient-tinged guitar textures across three long, depressive tracks dealing with loneliness and isolation. It is a minor, self-contained entry in the Dutch DSBM/atmospheric underground with no documented links to other scene names.

Gelassenheit is the solo avant-garde/atmospheric black metal project of Uncumber (Mave/Abe Goren), based in Brooklyn/New York and active since 2020. The self-titled album blends symphonic black metal, avant-garde metal, dungeon synth, depressive black metal, and coldwave into a synth-heavy sound built around explicitly Christian-anarchist ('Red and Anarchist Black Metal') themes of communal living, care for the poor, and anti-fascism, framed by the artist as 'using Christianity as a tool for advocacy and unique aesthetic cultivation' rather than evangelism. Uncumber is a trans woman and has described the project in interviews as unblack, RABM-aligned black metal.

Solo raw black metal project of Ottawa multi-instrumentalist Jessica Kinney, running since 2016 across roughly eight releases including full-lengths and splits. The sound layers harsh, noise-caked black metal against warped, decayed ambient passages, earning press comparisons to Sutekh Hexen, Gnaw, and dark-ambient artist The Caretaker. Albums build a recurring retro-futuristic, dystopian mythos described by Vice as 'Metropolis meets Victorian death cult.'

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The shape-shifting solo project of Andrew Curtis-Brignell, moving from raw one-man black metal to an ambitious fusion of metal, pop, shoegaze and post-rock on the double-disc Hands That Pluck (2011), before settling into harsh drone, dark-ambient folk and 'cinematic noise' on later releases like Setter of Unseen Snares (2015). Billed by the artist itself as 'genre shifting cinematic noises.'

Thralldom is the long-running studio project of Ryan Lipynsky (aka Killusion, also of Unearthly Trance) and Jared Turinsky (aka Jaldagar), formed on Long Island, NY in 1997. Deliberately never a live band, Thralldom trades in a blackened dark metal that folds in noise, drone, and industrial texture - 2006's 'A Shaman Steering the Vessel of Vastness' was reviewed for its 'lo-fi drone and dread' and 'doom-laden ambience,' built from what its label describes as 'an amalgam of half-tuned radio channels, machine noises, and shamanistic repetition.' The project returned in 2016 after a decade away with 'Time Will Bend Into Horror,' balancing that same experimentalism against tighter riff-craft.

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