M.I.R.V.

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.

Ordkløver is a music-and-poetry project begun in 1999 by Düreforsög vocalist Boris Schiøler alongside bandmates Nis Bysted and Andreas Hauer-Jensen. Its sole release, Byen Buldrer ("The City Rumbles", 2005, Escho), pairs Schiøler's phonetic poetry with rock guitar and drums and an eight-voice choir, described by reviewers as sounding like "intoxicated monks and/or sea pirates."

Dakrya are a theatrical/avant-garde metal band from Athens, Greece, founded in late 2004 by classically trained keyboardist Sophia Charalampous. Crime Scene (2010) was recorded in Sweden with producers known for work with Diablo Swing Orchestra and Dark Tranquillity.

Coppelius are a Berlin chamber-metal ensemble formed in 1997 who replace guitars and bass with cello, double bass, two clarinets and harpsichord, performing in top hats and tailcoats as a troupe of named Victorian/steampunk personas. Taking their name from the sinister toymaker of E.T.A. Hoffmann's 'Der Sandmann,' the band builds full theatrical stagings around dark-romantic themes across seven studio albums released since 2007 on F.A.M.E. Recordings.

Acrylazea is a Rochester, NY avant-garde/progressive metal act (formed 2016) built around an interstellar-pirate concept, complete with invented stage personas (The Captain, Sirius J. Axion, The Eye, Professor V.V. Olfenstein, Byron Nova). Debut A Cavalcade of Cosmic Calamity (2021) fuses melodic death metal, folk metal, power metal and neoclassical shred, with guest vocals from Judas Priest's Tim "Ripper" Owens. Reviewers place it in the theatrical/conceptual-metal lineage of Unexpect and Vulture Industries rather than any straightforward extreme-metal subgenre.

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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Aberrant Vascular is a Helsinki, Finland project built in 2003 around opera vocalist Vladimir "Lumi" and keyboardist Heikki "Mr. Rych" Pöntinen, releasing a single album, Aegisthus (2012), that layers operatic vocal theatrics over trip-hop beats, industrial synths and guitar riffing. It has been namechecked alongside Arcturus, Solefald, Vulture Industries and Sleepytime Gorilla Museum for its bombastic, genre-blending approach, though reviewers note the metal riffing itself stays fairly conventional under the vocal pyrotechnics.

Confusatron is a genre-hopping avant-garde metal band from Portland, Maine, active on and off since 2001 (a decade-plus hiatus ended with a 2019 return). Songs careen between jazz measures, surf-rock, prog-metal complexity, Italian-opera and Gilbert-and-Sullivan pastiche, and cow-punk within single tracks, drawing frequent press comparisons to Mr. Bungle.

Shaolin Death Squad are a theatrical progressive/avant-garde metal band from Denton, Texas, formed around 2001-2002, performing under kung-fu-themed stage personas. Their sound is dynamic prog metal with lead vocalist The White Swan frequently compared to Mike Patton, across releases including Intelligent Design (2006) and a 2024 self-titled record on Soman Records.

Winds are a Norwegian neoclassical progressive-metal band formed in 1998, trading black-metal ferocity for classically-informed composition, clean vocals and duelling piano and guitar. Drummer Jan Axel 'Hellhammer' Blomberg — best known from Mayhem — anchors the group alongside guitarist Carl August Tidemann and pianist Andy Winter across Of Entity and Mind (2001) and Reflections of the I (2002). The result is one of the scene's most overtly 'classical' side-projects, far from its members' extreme-metal roots.