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.

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.