This diagram shows the multi-dimensional scaling of the rationalized Bohlen-Pierce ("BP") scale spanning two adjacent perfect twelfths. As the main part of the compositional process, four straight lines are repeatedly projected into the square, each from a different side. If a line meets one of the notes of the scale, the note is sounded and the line is generally deflected to a spatially nearby note, which is also sounded. This process is repeated until a path is re-traversed or the line exits from the diagram. These constantly varying trajectories, not unlike those in a pinball game, generate melodies distributed among four clarinets, one for each side of the diagram. The four clarinets repeatedly play a new melody starting at multiples of 4", 3", 3½" and 2½" respectively. The melodies initially have a length of about half a second but gradually get longer. The diagram also shows the final four melodies of the piece.

Audio performers, Amy Advocat, Tilly Kooyman, Ákos Hoffmann, Nora-Louise Müller