Hesus Attor

Orange Tulip Conspiracy is Estradasphere guitarist Jason Schimmel's own instrumental bandleader project, formed in 2008. Its self-titled debut (Web of Mimicry) moves through prog fusion, 1950s-style jazz, Romani melody and 1960s Italian film-score homage, with Secret Chiefs 3's Trey Spruance and members of Estradasphere guesting.

SNAILFORCE! is the genre-hopping instrumental project of Greg Eldridge and Adam Stacey, based in Portland, Oregon, blending metal, Balkan, prog and other styles into what the band calls a "musical slime project." Adam Stacey is also known for recording with Estradasphere, Atomic Ape, Secret Chiefs 3, High Castle Teleorkestra and Igorrr. The band's debut, the two-track EP "Greg and Adam's Wilderness Adventure," was released on May 24, 2024, mixed and mastered by Justin Phelps at The Hallowed Halls, with a rotating cast of guest players on strings, horns, shamisen and more.

Don Salsa was an experimental avant-prog/avant-metal band formed in 1993 while its members were in high school in the South Bay region of Los Angeles, active until 1997. The band recorded a single album, 'Koolaide Moustache in Jonestown,' released May 21, 1997, recorded over nearly three years in a warehouse on a primitive digital multi-track recorder, with an opening track exceeding 30 minutes. Core members Tim Smolens and Jason Schimmel went on to form Estradasphere, and Schimmel later became a founding member of Atomic Ape and an active member of Secret Chiefs 3.

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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.

Mondo Cane is Mike Patton's orchestral love letter to 1950s–60s Italian pop, assembled after his years living in Bologna: a 40-piece orchestra, 15-piece band, and choir behind Patton crooning Neapolitan standards and Ennio Morricone's 'Deep Down', released on his own Ipecac label in 2010. Co-produced and arranged with conductor Daniele Luppi, the recordings were stitched together from live European performances in 2007. It earns its place in an experimental metal atlas as the purest example of where the genre's members go when they leave metal entirely — the Faith No More and Mr. Bungle frontman trading screams for Morricone-era orchestration, and critics compared it favorably to Mr. Bungle's California.

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System of a Down are an Armenian-American alternative-metal band from Los Angeles, formed in 1994, whose sound welds thrash aggression to Armenian folk melodies, abrupt tempo shifts and Serj Tankian's operatic, politically charged vocals. Multi-platinum records like Toxicity (2001) and the Mezmerize/Hypnotize pair made them one of the era's biggest metal acts. In 2008 Tankian co-wrote and traded vocals with Mike Patton on 'Bird's Eye' for the Body of Lies soundtrack.

Diablo Swing Orchestra is a Swedish avant-garde metal band formed in Stockholm in 2003, built around a genre-hopping fusion of swing, symphonic and progressive metal, jazz, and classical orchestration. Their theatrical sound pairs operatic and rock vocals with a horn section and cello, threaded through crunching riffs — an aesthetic they trace to a tongue-in-cheek mythology about a 16th-century "Diablo Swing" music guild. Across five studio albums from The Butcher's Ballroom (2006) to Swagger & Stroll Down the Rabbit Hole (2021), they have remained one of the more distinctive one-of-a-kind acts in avant-garde metal.

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Atomic Ape is a Los Angeles-based experimental ensemble led by composer and multi-instrumentalist Jason Schimmel (Estradasphere, Secret Chiefs 3), formed out of his earlier project Orange Tulip Conspiracy. Their sole album, Swarm (Mimicry Recordings, 2014), took over four years to record and fuses surf-rock, avant-rock, Balkan and jazz idioms into cinematic, odd-metered instrumentals. The record drew on a large cast of collaborators, including Secret Chiefs 3 leader Trey Spruance, violist Eyvind Kang and members of Estradasphere. The band later changed its name to Red Fiction.

Idiot Flesh was an American experimental rock band formed in Oakland, California in 1985 (initially as Acid Rain) and active until 1998, known for their theatrical "rock against rock" performances incorporating homemade and non-traditional instruments such as bicycle horns, saws, and mailing tubes. Their sound blended prog, funk, metal, opera, and Eastern European folk influences. They released the LP Tales of Instant Knowledge and Sure Death (1990), The Nothing Show (1993/94), and their final album Fancy (1997). Founding members Nils Frykdahl and Dan Rathbun went on to form Sleepytime Gorilla Museum and later Free Salamander Exhibit.

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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