Avant-prog groups

Tomahawk is an American experimental alternative metal/rock supergroup. They formed in 1999 when Fantômas, ex-Mr. Bungle and Faith No More singer/keyboardist Mike Patton and ex-The Jesus Lizard guitar player Duane Denison started swapping tapes with the intention of collaborating. Denison then recruited ex-Helmet drummer John Stanier, while Patton recruited then-Melvins/ex-Cows bass player Kevin Rutmanis into the group.

East of Eden was a British progressive rock band, who had a Top 10 hit in the UK with the single, "Jig-a-Jig", in 1971. The track was stylistically unlike any of their other work . Although some might consider this group as being a symphonic progressive band, others state that their style is mostly jazz oriented. Combining flutes, violins and tape loops to folk, gypsy and psychedelic music, the East of Eden style was always heavily supported on a pure rock base; strong and experimental.

Samla Mammas Manna was a Swedish progressive rock band often characterized by virtuosic musicianship, circus references and silly humour, similar in many ways to the song-writing style of Frank Zappa. They were one of the founding members of the Rock in Opposition (RIO) movement in the late 1970s. In 1979 they were Fred Frith's backing band on his solo album, Gravity (1980). Musically, they bore a resemblance to the Canterbury scene.

Univers Zero (also known as Univers Zéro and Univers-Zero) are an instrumental progressive Belgian band formed in 1974 by drummer Daniel Denis. The band is known for playing dark music heavily influenced by 20th century chamber music.

Ruins is a Japanese music duo composed only of drummer/vocalist Tatsuya Yoshida and a bass guitarist (there have been four such bassists in the band's history). The group, formed in 1985, was supposedly intended to be a power trio; the guitarist, however, never showed up to the band's first rehearsal so the group remained a duo. The music touches on progressive rock, jazz fusion and noise rock.

Caveman Shoestore was an avant-prog group founded in 1991 by bassist Fred Chalenor, percussionist Henry Franzoni and keyboardist/vocalist Elaine di Falco.

Hamster Theatre is an American avant-rock, experimental and folk jazz music group based in Boulder, Colorado, and led by composer and multi-instrumentalist Dave Willey. They have released three albums, and have performed at several festivals, including Progman Cometh and ProgDay.

Tone Dogs was an avant-prog group founded in 1987 by bassist Fred Chalenor and vocalist/saxophonist Amy Denio, who comprised the nucleus of the band. Drummer Matt Cameron, known for his work in the alternative rock group Soundgarden, was recruited to perform on the band's 1990 debut album Ankety Low Day. The band has also performed with Fred Frith of Henry Cow and Hans Reichel.

Camberwell Now were an English avant-prog band from London, formed in 1982 after the demise of This Heat.

Neo are a jazz/progressive band from Italy formed in 2005. They have received many positive reviews in the press, and their next album is being produced by Steve Albini.