Founded in Amsterdam in 1967 by saxophonist Willem Breuker, pianist Misha Mengelberg, and percussionist Han Bennink, Instant Composers Pool (or ICP) was an independent free jazz label and orchestra that would go on to release over fifty albums featuring such pillars of the scene as Derek Bailey, Peter Brötzmann, Evan Parker, Jeanne Lee, John Tchicai, and Steve Lacy. Based around the concept that improvisation was, in fact, an act of instantaneous composition, ICP's legacy on improvised and free music is impossible to overstate.

The ICP Tentet's Tetterettet is made up of recordings from 14-17 of September, 1977, cut and spliced together by pianist/composer Misha Mengelberg in a style similar to Teo Macero's work with Miles Davis. The first side is taken up entirely by Mengelberg's multi-part title track that breaks in and out of different tempos, with a loose arrangement style owing more than a bit to Charles Mingus' finest work on Black Saint or Ah Um.

Traversing across decades and styles from free-jazz funereal marches, to carnivalesque excursions, broken piano rolls, and ear-splitting skronk, ICP Tentet show remarkable skill and chops in both their compositional craft and improvisational symbiosis. There's a playful undercurrent here that finds its home in some previously uncharted land between Mingus and Spike Jones.

Featuring numerous ICP regulars along with the brilliant Alan Silva on bass, and a return to the fold of the amazing saxophonist John Tchicai, Tetterettet is one of the best of ICP's larger group recordings; humorous, unnerving, and ultimately, quite beautiful. This limited-edition reissue marks the first time this album has been in print on vinyl since its initial release.