Neural Indent

Vile Dissonance is the instrumental solo project of Dutch musician Edwin van Koppen, fusing mathcore and technical death-metal aggression with free-jazz harmony and ambient electronics. Across releases such as Metalheads are a Bunch of Conservative Fuckers (2020) and Music Theory Is a Social Convention (2021), phased-out low-tuned HM2 guitars and polyrhythmic drumming sit alongside analog synths and field recordings, with the artist citing touchstones ranging from Meshuggah and Knocked Loose to jazz-fusion guitarists Allan Holdsworth, Fredrik Thordendal and Marc Ribot, and ambient acts Boards of Canada and Air. The result plays like free jazz and mathcore trying to absorb one another.

Pan.Thy.Monium was a Swedish avant-garde death metal band active from 1990 to 1996, formed and led by Dan Swanö (as Day DiSyraah) with members drawn from his other project Edge of Sanity. Their signature was the baritone saxophone of Dag Swanö laid over murky, progressive death metal alongside organ and mystical synths, with vocals treated as a wordless instrument rather than carrying lyrics. Issued through Osmose Productions and later Relapse, their small discography is a touchstone for saxophone-driven experimental death metal.

Montreal trio blending sludge and death metal weight with jazz-inflected saxophone, ambient dronescapes, and psychedelic textures across long-form concept albums. Their 2022 record Hivemind unfolds as a continuous sci-fi narrative about first contact with an insectoid hivemind, drawing comparisons to early Mastodon, Dvne, Neurosis, and Oranssi Pazuzu. Formed from the ashes of Montreal band The Wild Hunt in December 2016, the band restructured as a three-piece in January 2021 with all members sharing vocal duties and reaching for non-traditional instrumentation.

Hivemind IIplay in the dock

BandcampSpotify

compare profiles →

Rivers of Nihil are a Reading, Pennsylvania band who wrote a four-album cycle with one season each, and turned the autumn record into the one everybody names first. Where Owls Know My Name (2018) put a saxophone in the middle of a technical death metal album — three solos and atmospheric passages from Burial in the Sky's Zach Strouse, with cello and trumpet around them — and it landed because the songs were already long, cinematic and keyboard-shaded, with somewhere for a horn to go. Brody Uttley's keys and programming carry that atmosphere; Adam Biggs moved from bass to lead vocals in 2022, and the self-titled 2025 album was written with no dedicated frontman at all. The saxophone stayed, which is the tell: the band deliberately refused to be 'the sax band' and kept using it anyway, as one more colour rather than a gimmick to retire.

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.

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.

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.

Televoidionplay in the dock

BandcampSpotify

compare profiles →

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.

Yawn is an instrumental Oslo five-piece that treats extreme metal as a jumping-off point for collective free-jazz improvisation, splicing heavy-as-hell riffing and brutal breakdowns with synth-laced electronics and loose, improvised guitar soloing. Formed in 2019, their DIY-recorded 2022 debut 'Materialism' (Mindsweeper Records) drew acclaim from prog and jazz press alike for treating metal orthodoxy as raw material for real-time reinvention.

Ingurgitating Oblivion are a German death metal band (active as such since 2002, roots in 1997) built around founder-guitarist Florian Engelke. Their later work, especially Vision Wallows in Symphonies of Light (2017) and Ontology of Nought (2024), moved into progressive, dissonant, avant-garde death metal, lacing Gorguts-style dissonance with jazz guitars, vibraphone, piano and musical saw, and drawing openly on Ligeti, Bartok and jazz. With Defeated Sanity's Lille Gruber on drums for the pivotal 2017 record, they became a fixture of the explorative death-metal underground.