Antoine Beuger, Burkhard Schlothauer, Chico Mello, Jurg Frey, Kunsu Shim, Michael Pisaro-Liu, and Thomas Stiegler participate in this realization of Christian Wolff's compositions to make sounds or draw sounds out of stones, alone or with other surfaces, acoustically or amplified.

Two works, one each from trombonist Radu Malfatti and clarinetist Jurg Frey, also credited with "instruments", field recordings and couterpoints; electroacoustic reductionist work of beautiful character that unfolds slowly and rewards attentive listeners in morphing sound.