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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.

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.

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.

Adaestuo is an international black metal project built around VJS (also known for Nightbringer, Demoncy, Incursus) and P.E. Packain (ex-Horna, Sargeist), with Hekte Zaren on vocals. Across Tacent Semitae (2016), Krew za krew (2018), and Manalan virrat (2020), raw black metal dissolves into extended dark-ambient and musique-concrete passages built around occult, ritual, and cosmogonic lyrical themes. It's a well-pedigreed underground black metal outfit, but none of its members' other projects currently appear in the atlas.

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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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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.

greyfleshtethered is the solo electronic black metal project of Daria, recording from the Connecticut woods and citing ambient black metal touchstones like Paysage d'Hiver, Neige et Noirceur, Trist, and Arkhtinn. 2021's 'The Dark Being' is an 83-minute, five-track narrative journey through alternate dimensions that blends atmospheric black metal with dark ambient, dungeon synth, and shoegaze textures. Live, the project splits its set between guitar and soundboard-triggered electronics. The project is explicitly framed as trans anarchist and anti-fascist within the black metal underground.

Avant-garde metal duo of 47_N_74D0 and horrid_charme, recorded and arranged 2019-2020 between Warsaw and Madrid. Their debut Deformed by the Misuse of Soul [RG06] (ruego label, May 2020) fuses black metal and industrial metal with death industrial, noise, musique concrète, and glitch, using field recordings and sound design across four long-form tracks (one featuring guest act portento).

Edasi is a solo project of M. Kleis from Tallinn, Estonia, self-described as 'experiments in the field of black metal/drone/ritual ambient/noise/psychedelia' and reviewed as 'outsider black metal.' The catalogue spans lo-fi black-noise pieces (Horror Mirror) to the 2009 EP Pikse litaania, which reworks Estonian folk-choral composer Veljo Tormis and medieval composer Hildegard von Bingen into extended, droning, chant-like sound-collage pieces -- described by Boomkat as re-interpreting those composers' work 'through the outsider black metal' of Kleis's own sound.

Omega Centauri is a UK-based atmospheric black metal project built around multi-instrumentalist Tom Vallely, blending glacial tremolo-riff black metal with dark ambient textures, doom-paced passages, and cinematic post-rock swells. Recorded piecemeal between 2006 and 2011, debut Universum Infinitum favors slow-burn atmosphere and philosophical/theological themes over aggression. The project sits in the same cold-and-spacious atmospheric black metal lineage as labelmates on Duplicate Records.