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Sanguine Glacialis is a Montreal melodic death metal band, active since 2010, that layers jazz, classical, latin and folkloric elements atop a symphonic/melodic-black-tinged death metal base. Their third album, 2023's Maladaptive Daydreaming, brought in saxophone, clarinet and cello guests over the core lineup fronted by Maude Théberge's vocals, keys and violin. They've shared stages with Dark Tranquillity and Omnium Gatherum.

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Sanity Theorist is a DIY solo avant-garde/progressive death metal project based in Clermont, Florida, releasing free (donation-based) albums via Bandcamp since at least 2016, including Time Erosion, Escher Architecture, Ferrofluid Quicksand, and Existent Suffering. The composer's own bio describes progressive/death/funk metal roots layered with tribal Taiko drums, '70s prog rock, eastern folk, psychedelia, lead bass, jazz fusion, and neoclassical influences over extreme-metal rhythms. The same artist is also credited as a member of the multi-instrumentalist duo Refusal Knot.

Azure Emote is an avant-garde death metal project founded in New York in 2003 by illustrator/vocalist Mike Hrubovcak (Monstrosity, Vile) as an outlet 'to express personal negativity without the genre limitations often present within Extreme Metal.' Built around a core band with guitarist Ryan Moll, bassist Kelly Conlon, drummer Mike Heller and violinist Pete Johansen, the project layers in shifting rosters of guest musicians — female vocalists, saxophone, harmonica, keyboards — to give nearly every song its own distinct color. Releases including The Gravity of Impermanence (2013) and The Third Perspective (2020) have come out on Selfmadegod Records.

LA duo of guitarist Lee Wanner and vocalist Paula Stefanini, active since 2012, fusing djent, jazz-fusion, blues and country into a genre-scrambling avant-garde metal project. Their two albums, Butterfly (2012) and Exocoetidae: Flying Fish (2013), pair death-metal vocal bursts with virtuosic, humor-laced composition. Guest musicians on Exocoetidae include prog drummers Morgan Ågren and Marco Minnemann.

Orgone is a Pittsburgh, Pennsylvania avant-garde extreme-metal band formed in 2006, beginning as a technical deathgrind outfit (Accumulator, The Goliath) before drifting toward a genre-agnostic progressive death sound. The Joyless Parson (recorded 2008, released 2014) and Pleroma (2024) fold acoustic/chamber instrumentation, cello, jazz voicings and post-metal atmosphere into their knotty tech-death, with the band openly describing itself as unclassifiable. It stands as a cult, self-releasing act on the experimental fringe of American death metal.

Amogh Symphony is a Mumbai-founded technical/progressive metal project started in 2003–2004 by multi-instrumentalist Vishal J. Singh, blending extreme technical death metal with Indian classical melody and jazz-inflected arrangements. What began as a solo studio project expanded into an international line-up spanning India, Russia, Portugal and Germany.

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Ephel Duath was an Italian avant-garde metal band from Padua, active 1998-2014 and led throughout by guitarist Davide Tiso. Their sound is 'an unorthodox combination of hardcore punk and jazz fusion,' recruiting players from jazz, blues, funk and progressive backgrounds. Later lineups featured vocalist Karyn Crisis and drummer Marco Minnemann, and the band released through Code666, Earache and Agonia Records.

Catatonic Effigy is a free-improv/avant-metal trio formed by guitarist Álvaro Domene, bassist/producer Colin Marston, and drummer Mike Caratti, convened at Marston's Menegroth studio in early 2019. Their debut 'Putrid Tendency' (Iluso Records, Nov. 2019) fuses free jazz, minimalism, and 20th-century composition.

Zakas is an American avant-garde/self-described 'world metal' band from Las Vegas, Nevada, active from 1998 with releases into the 2000s and a 2025 single revival, built around a rotating cast of session musicians rather than a fixed lineup. Their sound splices Entombed-style heavy death-metal guitar tone with funk slap bass, saxophone, gothic keyboards, sitar, flute, bongos, and shifting vocal styles (deep, distorted, female, rapped).

Eigenstate Zero is the solo project of Stockholm metal veteran Christian Ludvigsson, launched in 2018 to fuse progressive death metal with Frank Zappa-style jazz-fusion excess. Across Sensory Deception, Machinery of Night, The Malthusian and Shape of God Thought of Sun, Ludvigsson stacks odd time signatures and weird electronic/synth textures over a death-metal chassis, filling 'passages of eclectic weirdness' between the heavy sections.

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