Founded in 1967 by pianist Misha Mengelberg, drummer Han Bennink, and saxophonist & clarinetist Willem Breuker, this double CD documents the earliest years of the ICP collective through live & studio recordings from 1966-71, with an impressive cast of jazz and contemporary compositional players creating a delightfully diverse set of approaches to improvisation.

10 years after drummer Han Bennink, pianist Misha Mengelberg, and saxophonist Willem Breuker formed the ICP co-op, Bennink & Mengelberg formed this 10-piece "Tetterettet", an all-star international group including Peter Brotzmann, Tristan Honsinger, John Tchicai, this their first incredible and far-ranging album, remastered and available on CD for the first time.