December 1952 by Earle Brown
Earle Brown's system of notation is influenced heavily by the mobiles of Alexander Calder. Although the score to this piece is two dimensional, he instructs the interpreter to imagine it as a three dimensional, mobile construction, thus evoking the idea of perceiving a Calder mobile as a musical score. For this realization, close miking of the drones and chanter at varying levels of air pressure was employed to create a fixed tape part spatialised on six loudspeakers. The performer then walks slowly around the room, playing material that interacts with the prerecorded sounds, highlighting the mobile dimension of the score. This recording is from a live performance at the Bremen town Ballroom in Millheim, PA in the summer of 2015.