Forgotten Silence

Tokyo progressive/avant-garde metal quintet active since 1997, built around keyboardist Masashi Momota's sweeping piano work and vocalist Anoji Matsuoka's genre-hopping delivery, from spitting growls to a more crooned register. The band favors through-composed 'movements' over verse-chorus form, blending death metal weight with jazz and fusion harmony; their 2005 sophomore album Naishikyo-Sekai reached the West via a 2008 Season of Mist reissue. Early drummer Junichi Harashima left the band (replaced by Gaku Yamaguchi around 2006) to become the longtime drummer of fellow Japanese avant-garde metal act Sigh.

無下の人 (Muge No Hito / The Free Man)play in the dock

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Between the Buried and Me are an American progressive metal band formed in 2000 in Raleigh, North Carolina, spanning progressive metalcore, technical death metal and avant-garde metal. Their genre-hopping suites mix death growls and cleans with sweep-picked leads that draw on bluegrass and jazz, plus ambient 'space music' passages and acoustic balladry.

Tantric Bile is the solo avant-death/free-jazz project of North American multi-instrumentalist Matt Stephens, who also leads Effluence and Neural Indent; the name is a nod to a Painkiller track. Since 2021 it has released a steady stream of albums on Stephens' own Putrefactive Recordings, blending guttural goregrind vocals with squealing saxophone-adjacent woodwinds, film samples and John Zorn/Naked City-style jump-cut composition, often joined by regular Effluence collaborators Paul Acuña and Ollie Burgess.

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.

Akphaezya are a self-described 'eklektik metal' band from Orléans, France, active since 2002 and built around guitarist/concept-writer Stephan H. Zag-Zero's multi-album story arcs. Reviewers (French-Metal.com, Metal Archives) describe them freely mixing death metal, jazz, gothic, stoner, and cabaret/bal-musette elements, with critics drawing style comparisons to Unexpect, Diablo Swing Orchestra, and Pin-Up Went Down (no documented member/label overlap with those acts was found). Vocal duties have passed from the operatic, ethnically-inflected Nehl Aëlin to current singer Hakata Ooh.

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Moral Collapse is a Bengaluru, India extreme-metal project founded in 2020 by guitarist/vocalist Arun Natarajan, forging old-school death metal in the vein of Nile and Morbid Angel that is repeatedly derailed by dissonant, Dillinger Escape Plan-style riffing, free-jazz saxophone/violin, and glitchy ambient interludes. Session drummer Hannes Grossmann (ex-Necrophagist, Obscura, Alkaloid) anchors both the 2021 self-titled debut and 2023's Divine Prosthetics, records stacked with guest guitar spots from Kevin Hufnagel (Gorguts, Dysrhythmia) and Death's Bobby Koelble. The project splices Indian percussive texture and free-improv passages into an otherwise brutal technical-death chassis.

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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.

Opeth are a Stockholm band formed in 1990 who spent three decades welding death metal to 1970s progressive rock — Mikael Åkerfeldt growling over one riff and crooning over the next, with acoustic guitar, mellotron and knotty jazz-leaning chord changes given as much room as the heaviness. Steven Wilson's production on Blackwater Park (2001) and the entirely clean, mellotron-soaked Damnation (2003) pushed the prog half to the front, and by Heritage (2011) the growls were gone altogether in favour of jazz rock, Camel and Swedish folk. The Last Will and Testament (2024) brought the death vocals back after sixteen years inside a narrated 1920s will-reading concept record, with Jethro Tull's Ian Anderson on flute and narration. Theirs is the rare case where the experiment became the mainstream success, and the audience followed them into the strange parts anyway.

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.

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).