Following a 1964 Albert Ayler tour, trumpeter Don Cherry remained in Europe, working on new concepts of improvising based on form itself, developing his concepts with saxophonist Gato Barbieri, vibraphonist Karl Berger & bassist J.F. Jenny Clark, composing two brilliant albums: 1966's Communion with Barbieri, Henry Grimes & Ed Blackwell; and in 1967 Symphony for Improvisers as a septet.

Live from Lisbon's Jazz em Agosto Festival, cornetist Rob Mazurek merges his Chicago and Sao Paulo Underground bands, adding bassist Matthew Lux and jazz legend tenor saxophonist Pharoah Sanders, for a potent blend of modern jazz, electronics, and free improvised music.