Atrorum

Maladie is a German 'plague metal' collective from Ludwigshafen, founded in 2009 by multi-instrumentalist Björn Köppler, whose self-coined genre name plays on the French word for sickness. Signed to Apostasy Records, the band pairs a progressive/melodic black metal core with cinematic orchestration, jazz-inflected saxophone (courtesy of Hauke Peters) and deliberately theatrical, multi-vocalist arrangements across a numbered 'Symptoms' album series. Their sixth full-length, The Dance of Tragedies (2026), was praised for eclectic musicianship even as some reviewers found its genre-toggling and irony overplayed.

Aryos is a long-running French avant-garde black metal act from Ussac/Brive-la-Gaillarde (Corrèze), formed in 1994 (originally as Forlorn, renamed 1997). Built around an occult/esoteric concept by members using the stage names Napharion, Pétal and Alilteas Gornnec, their sound layers jazz-tinged synths, classical piano and prog-rock textures over a black metal core. Later releases like Les Stigmates d'Hécate (2015) lean into atmospheric, folk-tagged textures.

Epectase is a Paris duo that folds frantic tremolo-picked black metal into long-form suites of 70s prog, jazz-tinged interludes, and hazy krautrock electronics, sliding between shrieks, operatic cleans, and meditative ambient passages within a single track. Since forming in 2018, multi-instrumentalist Vague and vocalist Avitus have released a steady run of albums and EPs on I, Voidhanger Records and Frozen Records, sitting among the more overtly progressive-rock-indebted corners of the French avant-black underground.

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French duo led by multi-instrumentalist Slo (guitars/drums/vocals/keys) with bassist Camille Giraudeau, playing avant-garde/progressive post-black metal descended from Emperor, Ulver, Borknagar and Ved Buens Ende. After a 12-year gap between albums, 2025's Ruina Draconis (I, Voidhanger) piles on 'extremely layered', ambient-electronic interludes between bursts of blackened violence. Giraudeau's parallel work in Dødheimsgard's touring lineup, Doedsmaghird, Stagnant Waters and Void ties Smohalla directly into the same avant-black/noise diaspora.

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Lychgate is a London-based avant-garde black/doom metal band formed around 2011-2012, built on a foundation of pipe/church organ used as the compositional backbone of every track. Their influences span late-19th/early-20th-century art music, Rock in Opposition and musique concrete. They record for Debemur Morti Productions, with a discography running from the 2013 self-titled debut through 2025's 'Precipice.'

Mayhem is a Norwegian black metal band formed in Oslo in 1984, and one of the founding architects of the Norwegian black metal scene whose cold, abrasive sound shaped the entire genre. Their debut full-length De Mysteriis Dom Sathanas (1994) — completed amid the deaths of vocalist Dead and guitarist/founder Euronymous — remains a defining record, and its signature song "Freezing Moon" a black metal touchstone. The long-running lineup pairs founding bassist Necrobutcher and drummer Hellhammer with Hungarian vocalist Attila Csihar, whose otherworldly, ritualistic delivery also anchors the drone-metal group Sunn O))).

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Goatchrist is the solo vehicle of Leeds, UK musician Jacob Guilherme, formed in 2014, an explicitly occult project layering piano, orchestral textures, and jazz-inflected instrumental passages over an Orthodox black-metal core.

Atrox is a long-running Norwegian avant-garde metal band from Trondheim (formed 1988, debut album 1997) that brands its sound 'schizo/psycho metal' — experimental, progressive metal built on sharp contrasts of light and dark, unorthodox structures, and intense, bizarre vocals. Rooted in an atmospheric death/doom origin, later albums on Season of Mist (Contentum, Terrestrials, Binocular, Monocle) push toward melodic yet unpredictable, keyboard-and-sample-textured territory in the vein of Arcturus and Manes. The band's guitar core (viNd and Rune Sørgård) has anchored it since 1997.

Back to R'lyeh is a Madrid progressive/avant-garde metal band formed in 2011, building Lovecraftian Cthulhu Mythos concept albums out of genre-hopping riffs that swing from black and death metal aggression into funk, jazz-tinged chords, and theatrical, multi-voiced vocal performances. Critics have compared their unpredictable, vocally chaotic style to Mr Bungle, Sigh, and System of a Down.

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Norwegian avant-garde project (1998-2006) from Notodden founded by Ihsahn (Emperor), his wife Ihriel and her brother Lord PZ, on their own Mnemosyne Productions. It began as symphonic avant-garde extreme metal and drifted toward classical-tinged avant-garde rock full of twisted synths, electronics, operatic female vocals and Ihsahn's shrieks. Lost in Reverie (2004) is regarded as a landmark of the genre-transcending Norwegian avant-garde.