An audio composition experiment using moving particles and convex hulls. At each moment, a set of convex hulls is created by finding the convex hull of the set of particles, then the convex hull of the particles not in that convex hull, and then another and another until all particles are part of some convex hull. A chord created using simple rational ratios is determined by the short sequence of the number of particles in each convex hull. The particles move linearly, occasionally speeding up for a moment, or changing direction. The "bounce" off the edges of the screen. Eventually, they start disappearing. No AI was used in the creation of this video.