Apollonian Gasket
Tap a circle to sound its tone and grow tangent children into the gap beneath your finger — packing an infinite, self-similar fractal you compose by ear. A circle's curvature is its pitch: bigger rings ring lower, and every tap harmonises.
circles ≈ 0
tap = sound + pack · drag = pan · scroll = zoom
The packing is already alive and silent — Begin lets each circle ring.