The Flying Luttenbachers

Killing Spree is a French avant-jazz/death-metal duo of saxophonist Matthieu Metzger (Klone, Orchestre National de Jazz) and drummer Grégoire Galichet (Deathcode Society, Kwoon), formed after the pair met on a tour of Japan. Their 2020 debut EP A Violent Legacy reworked Death and Meshuggah tracks through saturated free-jazz saxophone and talkbox, and their 2024 full-length Camouflage (Klonosphere/Season of Mist) pushes further into technical, hardcore-adjacent death-metal-via-jazz territory. Not to be confused with several unrelated straight thrash-metal bands of the same name.

Long-running Indonesian band from Yogyakarta, formed 1998, that started as avant-garde/technical death metal and by their 2009 album 'Lipan's Kinetic' had shifted toward a free-jazz-influenced mathcore style, incorporating clean jazz guitar passages, electronic/dubstep digressions, and even a straight-faced Cure cover ('Friday I'm In Love') alongside brutal death metal riffing. Reviewers have likened the results to 'a collaboration between John Zorn and Melt-Banana' and to Psyopus-style mathcore fused with brutal death metal. Current lineup is Halim (guitars, since 1998), Mal (bass, since 2001), Didit (vocals, since 2002) and Obet (drums, since 2006).

A Mind-Expanding Headtripplay in the dock

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Zu are an Italian avant-jazz/noise-metal trio formed in Ostia near Rome in 1997, built on the unconventional lineup of Luca T. Mai's baritone saxophone, Massimo Pupillo's bass and Jacopo Battaglia's drums. Their heaviest album, Carboniferous (2009), was their first release for Mike Patton's Ipecac Recordings. It features guest appearances by Mike Patton on vocals (notably on "Soulympics") and King Buzzo (Buzz Osborne) of the Melvins on guitar for "Chthonian."

Soulympics (with Mike Patton)play in the dock

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Brain Tentacles is a Chicago trio formed in 2013: Bruce Lamont (Yakuza, Bloodiest) on saxophone, electric piano, synth and voice; Dave Witte (Discordance Axis, Municipal Waste) on drums; and Aaron Dallison (Keelhaul) on bass and synth. Their 2016 self-titled debut (Relapse Records) swings between 'mathy chaos' and 'juddering grooves,' drawing direct comparisons to John Zorn's Naked City, with a guest vocal spot from Eugene Robinson (Oxbow), production by Sanford Parker, and cover art by Jef Whitehead (Leviathan).

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A Northern California one-man band whose 'Never Was' (2024) and 'Shriek' (Lou Kelly...and Friends) LPs bounce between jazzcore, mathcore, grindcore, crust punk and harsh-noise-wall under a self-described 'Progressive-Violence-Jazz' banner, all written, performed and produced solo. The 'Shriek' record began as a drunken online invitation for strangers to sing over Kelly's instrumentals and grew into a 14-track collaborative curio on the tiny label THE HILLS ARE DEAD Records. Listeners have likened the results to a heavier Mr. Bungle/Mike Patton side-project, though that is a stylistic comparison only — no verified personal connection exists.

Lye by Mistake were an instrumentally virtuosic experimental metal band from St. Louis, Missouri, active 2004-2011, who moved from vocal mathcore on their 2006 debut Arrangements for Fulminating Vective to fully instrumental jazz-fusion metal on 2009's Fea Jur after vocalist Tony Saputo's 2008 departure. Reviewers likened their guitar work to jazz-fusion players like Pat Metheny and Al Di Meola grafted onto a Meshuggah-indebted metal chassis. They toured alongside mathcore-scene peers including Psyopus, The Number Twelve Looks Like You, Cattle Decapitation, and Arsonists Get All the Girls.

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Hunab Ku was a Seattle avant-garde metal act built around vocalist Mike Gilmore, guitarist Luke Jaeger (ex-Sleep Terror, joined 2008 replacing founding guitarist Dan Hagerty), bassist Matt Finn, and drummer Mark Villano. Their 2007 debut "The Gaze Inward" (Black Sheep Records) was reviewed as chaotic mathcore-indebted avant metal, drawing explicit critical comparisons to Dillinger Escape Plan, Cephalic Carnage, and Fantomas, with vocals ranging from screams to croons and moans. IMPORTANT DISAMBIGUATION: this is distinct from an unrelated Costa Rican black metal band of the same name (founded 2016 by Lord Eythraz) and a dark-ambient project — the Seattle act is the one matching the chart description and reviews cited here.

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Ukakuja is an international extreme-music collective centered on vocalist Lori Bravo (ex-Nuclear Death), fusing dissonant deathgrind, avant-garde grindcore, and free-jazz-adjacent noise into a dense, short-form assault. Debut album Ōmukade (2023, The Centipede Abyss, limited to 35 copies) draws direct comparison to John Zorn's Naked City, pairing Bravo's operatic-to-guttural vocal range with morphing synth textures and a revolving cast of guest screamers. It reads as a spiritual successor to Nuclear Death's chaotic early sound rather than a conventional band.

An Oakland art-thrash unit fusing King Crimson-style tempo shifts and free-jazz saxophone skronk with Slayer-speed riffing, math-rock structure, and post-punk snarl. Signed to Crucial Blast for City of Dis (2005), critics placed them alongside Naked City and Yakuza for pushing metal and jazz into the same collapsing structure.

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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