Mobile II: Red Arcing is based on Alexander Calder’s 1950 mobile
Red Gongs. Calder’s mobile has an arc of several irregular red shapes close together, with three brass shapes spread farther apart at one end. Musically, this takes the form of rapid groups of notes flickering through registers. In the middle are three clouds of whistle tones — very soft high notes. The piece is dedicated to flutist
Robin Meiksins.