Indra's Descent
Strike a circle: its just-intonation pitch rings, then the tone ripples outward along the tangent-neighbour graph — a decaying, self-similar arpeggio cascading down the packing. Hold anywhere to dive, and the gasket re-tiles infinitely into the cusp you fall toward.
circles ≈ 0
tap = strike + cascade · hold = dive · drag = pan
The gasket is already drawn and silent — Begin lets each circle resonate.