Two thirds of the free jazz group "Boom Box"--saxophonist Thomas Borgmann and drummer Willi Kellers--and referencing that band's 2011 album titled Jazz, Keys & Screws is rounded out as a trio with double bassist Jan Roder, following the format of "Jazz" with compositions from each player following head/solo format, fueled by each player's extensive experience.

The Berlin-based trio of free improvising vocalist Almut Kuhne, pianist Achim Kaufmann and reedist Gebhard Ullmann for ten originals, on-the-edge, informed improvisation of great skill and melodic invention, taking their music into uncharted and unconventional territory.

John McAlpine performs composer Tom Johnson's beautiful piano cycle "Counting Keys", using mathematical progressions to create the structure of its 5 movements; plus 8 parts from his "Organ and Silence for Piano"; and two other compositions using mathematical processes.