Guillermo Gregorio produces a series of compositions that reinterprets the structural concepts of Constructivism, Concretism, and Madi, focusing on the physicality of sound.

In 2000, saxophonist Mats Gustafsson and curator John Corbett organized a 16-piece free music big-band featuring key members of the Chicago and Swedish scenes, recording these two impressive, ecstatic, and explosive works.