Zevious

Blind Idiot God is an instrumental trio formed in 1982 in St. Louis, fusing noise rock, dub, funk, free jazz and metal; Greg Ginn signed them to SST Records after hearing their demo. Their 1988 album Undertow was produced by Bill Laswell and featured saxophonist John Zorn, and the full band performed on Laswell's Praxis album Sacrifist (1993) alongside Buckethead, Bootsy Collins and Yamatsuka Eye. Khanate drummer Tim Wyskida joined in 2001 and remains the band's drummer through their 2015 reunion album Before Ever After.

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The Pitts Minnemann Project is an instrumental progressive-rock/jazz-fusion collaboration between keyboardist Jimmy Pitts (Scholomance) and drummer Marco Minnemann, joined by rotating guest virtuosi on guitar, bass, saxophone, and violin. They released two albums, '2 L 8 2 B Normal' (2014) and 'The Psychic Planetarium' (2016), both blending heavy fusion with progressive-metal complexity.

Dysrhythmia is an instrumental progressive/technical metal trio formed in Philadelphia in 1998 by guitarist Kevin Hufnagel and drummer Jeff Eber, now based in Brooklyn. Bassist Colin Marston — also of Krallice, Behold...The Arctopus, and the reunited Gorguts — joined in 2004, and the band's eight studio albums fuse jazz-inflected chord work, technical/progressive-death riffing, and prog-rock structure into a wordless, largely live-tracked instrumental attack.

Cartel Carnage is a French quintet of jazz-scene musicians (guitar, bass, trumpet, tenor sax, drums) fusing free jazz, heavy metal, pop and progressive rock into what reviewers called a 'musical UFO.' Their sound and stated influences — Naked City, Fantomas, Mr. Bungle, Zorn, Ornette Coleman, alongside Meshuggah and Slayer — place them squarely in genre-collision RIO/avant-prog territory, though no sourced personnel or label ties connect them to the existing atlas. Their sole full-length, Incorporated, was released in 2012 on Great Winds/Musea Records.

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Tear Light From Matter is a Massachusetts-based instrumental act pairing saxophone with a standard metal rhythm section, self-tagged on Bandcamp as experimental/jazz metal/fusion/prog metal. Their debut, "In Statu Nascendi" (released 25 January 2019, recorded and mixed by Jerry MacDonald at Odd Fellows Recording), sits alongside a further release, "Fœtal Præyers", in a small but pointed discography. The saxophone-led interplay places them in the lineage of jazz-inflected heavy bands rather than straightforward metal songwriting.

Volto! is an American jazz-fusion jam band based in Los Angeles, best known as the side project of Tool drummer Danny Carey. Formed in the early 2000s from improvised sessions with guitarist John Ziegler and bassist Lance Morrison at a San Fernando Valley jazz club, the group spent nearly a decade as a live-only act before releasing its debut album Incitare (2013) on Fantasy Records. Their heady, genre-spinning instrumental sound bridges King Crimson, Liquid Tension Experiment, and 1970s fusion, foregrounding the improvisation that Carey has cited as his main motivation for the project.

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Titan to Tachyons is a New York instrumental quartet led by guitarist Sally Gates, built around a two-bassist frontline (Trevor Dunn and Matt Hollenberg) with drummer Kenny Grohowski, fusing free-jazz improv, prog counterpoint, and metal violence into sci-fi-themed instrumentals. Their 2022 album Vonals was released on John Zorn's Tzadik label (following 2020's Cactides on Nefarious Industries), and the polyrhythmic, two-bass arrangement gives the compositions an unusually dense, contrapuntal low end. Every member's other credits (Mr. Bungle, Fantômas, Tomahawk, Secret Chiefs 3, Cleric, Imperial Triumphant) wire this band into the Zorn/downtown-jazz and Patton-adjacent avant-metal orbit.

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Ahleuchatistas are an American instrumental avant-prog / math rock group formed in Asheville, North Carolina, in November 2002, mixing jazz, progressive rock, noise, African and Chinese traditional music into block-form, thru-composed and improvised pieces. Their name fuses Charlie Parker's 'Ah-Leu-Cha' with the Zapatistas. Their 2004 album The Same and the Other was reissued on John Zorn's Tzadik in 2008 after Zorn took interest, and the current lineup pairs founder Shane Parish with bassist Trevor Dunn.

Los Angeles metal-jazz quartet fronted by trumpeter Dan Rosenboom and guitarist Jake Vossler, pairing lyrical, Miles-Davis-lineage trumpet against Vossler's distorted, noise-inflected guitar over double bass and drums. Their 2017 debut Reclamation (Tzadik) was tracked in 72 hours as a politically charged 'jazz protest record,' moving between free improvisation, heavy thrash riffing, and balladic passages.

Trevor Dunn's Trio-Convulsant is the avant-garde jazz vehicle of Mr. Bungle bassist Trevor Dunn, active since 1997 and built on the idea of a compositional jazz trio that also wields rock's power chords — AllMusic called the result "moody jazz with convulsive rock." The group debuted with Debutantes & Centipedes (1998, Buzz Records) featuring guitarist Adam Levy and drummer Kenny Wollesen, then re-emerged on Ipecac with Sister Phantom Owl Fish (2004) in a new lineup with guitarist Mary Halvorson and drummer Ches Smith. That trio returned on Séances (2022, Pyroclastic Records), expanded by the chamber quartet Folie à Quatre — including Sleepytime Gorilla Museum violinist Carla Kihlstedt — for music inspired by the 18th-century French Convulsionnaires of Saint-Médard.

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