Kucoshka

Long-running Novato, California outfit built around Jean Baudin's tapped/slapped 11-string bass, splicing metal, funk, ska, hardcore, and jazz with East Indian and Egyptian melodic detours and deliberately absurd lyrics. Active since 1989 with a loyal underground following (Papa Roach, Alien Ant Farm, and Deftones all opened for them early on), they've resisted easy genre classification across albums like Intestinal Fortitude, Mutopia, and Vicuna. Classified as RIO/Avant-Prog by ProgArchives and tagged Avant-Garde/Funk/Alternative Metal elsewhere, they sit at the noisier, punkier end of the genre-scrambling spectrum despite being blacklisted from Metal Archives proper.

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Black Heart Sutra is a New York experimental/mathcore project centered on composer-violinist Earl Maneein (SEVEN)SUNS) and drummer Kenny Grohowski (Imperial Triumphant, Secret Chiefs 3, frequent John Zorn collaborator), expanded on record with guest vocalists including Jessica Pimentel. Their 2017 debut album "Zersetzung" (Still Water Recordings) mixes progressive-jazz harmony with mathcore's chaotic, Locust-like structural shifts.

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Duct Tape Mustache were a Chicago-area experimental/metal/jazz band active in the early-to-mid 2000s, releasing a self-titled EP in 2002 and 'Mise En Scéne' in 2004 before disbanding in 2005. The lineup blended saxophone, keyboards, and dual guitars into a genre-hopping, horn-driven sound described online as circus-tinged avant-garde metal. Following the split, members scattered into other Chicago-scene projects including Ideamen.

Free Salamander Exhibit is an avant-rock band from Oakland, California, formed by former members of Sleepytime Gorilla Museum. Comprising roughly four-fifths of that group's lineup plus additional players, the band pursues an art-prog / rock-in-opposition sound built around an arsenal of homemade instruments alongside guitars, bass, and drums. Their debut album, Undestroyed, was released December 13, 2016 on the Web of Mimicry label.

The Number Twelve Looks Like You is an American mathcore band formed in Bergen County, New Jersey in 2001 (initially as And Ever), taking their name from a 1964 Twilight Zone episode. Their dystopian screamo/grind fuses metal, hardcore, and Frank Zappa-esque experimental shifts across albums including Mongrel (2007) and, after a 2010–2016 split, the comeback record Wild Gods (2019). The band is fronted by longtime vocalist Jesse Korman and guitarist Alexis Pareja, with a lineup that has turned over repeatedly since its early-2000s inception.

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Formed in Austin in 1987 and relocated to Chicago in 1989, The Jesus Lizard perfected a blueprint of noise-rock menace: David Wm. Sims and Mac McNeilly's lurching, hydraulic rhythm section, Duane Denison's wiry precision guitar, and David Yow howling from deep in the mix like, in one critic's words, 'a kidnap victim trying to howl through the duct tape over his mouth.' Their Steve Albini-recorded Touch and Go albums Goat (1991) and Liar (1992) stand among the most significant noise rock records of the era, and a split single with Nirvana briefly brushed them against the mainstream. After disbanding in 1999 and reuniting for tours from 2009 onward, they released Rack in 2024, their first album in 26 years.

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Down I Go are a London experimental/progressive hardcore band formed in 2005 by vocalist Pete Fraser, guitarist Alan Booth, drummer Ben Standage and bassist Marek Bereza, known for pairing dissonant, mathcore-adjacent hardcore with brass and orchestral instrumentation. Nearly every release is built around a single narrative concept -- dinosaurs, man-made disasters, robots, historical tyrants, Greek mythology, and Icelandic folklore (the latter partly written during an Iceland residency) -- with 2022's Aum Shinrikyo centered on the doomsday cult of the same name. One reviewer likened the horn-driven chaos to 'Botch with Rocket From The Crypt's horn section,' while Fraser's vocals swing from acidic barks to spoken word to crooning.

San Francisco shape-shifters who smuggled funk, hip-hop, synth-pop, thrash, lounge and film-score bombast into stadium-sized alternative metal, peaking commercially with The Real Thing (1989) and creatively with the gloriously perverse Angel Dust (1992). When Mike Patton was poached from Mr. Bungle in 1988, the band became the primary launchpad for his sprawling avant-garde universe — making Faith No More the closest thing this atlas has to a mainstream gateway drug. Few bands did more to convince metal that genre borders were optional.

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Primus are a San Francisco Bay Area experimental rock trio led by bassist/vocalist Les Claypool, whose virtuosic slap-and-tap bass, absurdist storytelling and cartoonish character sketches define a sound that fuses funk, thrash, prog and Americana. Formed in 1984, they broke through with Sailing the Seas of Cheese (1991) and Pork Soda, later returning with records like The Desaturating Seven (2017). Faith No More drummer Mike Bordin, a longtime friend of Claypool's, guested on several early Primus recordings.

Ruins is a Japanese progressive-rock duo formed in 1985 by drummer/vocalist Tatsuya Yoshida, intended as a power trio until the guitarist never showed, leaving a manic bass-and-drums unit. Heavily indebted to French zeuhl pioneers Magma, Ruins performs written-out, fiendishly complex compositions sung in an invented Kobaian-like tongue, veering through prog, jazz fusion and noise rock. Yoshida, the band's only constant, is one of the pillars of Japanese avant-rock; Ruins released several albums on John Zorn's Tzadik label, including Hyderomastgroningem (1995). The bass seat rotated across the group's history.

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