Vellum
Your voice grows a living membrane that sings its own folds. A single luminous curve grows by differential growth — fed by your breath, sculpted by your pitch, and its geometry is the score.
Design notes
A closed curve grows by the differential-growth / “differential line” algorithm (Anders Hoff / inconvergent — enjoying a recent generative-art revival): each node is pulled toward its neighbours, pushed from all nearby nodes, and new nodes are inserted where the membrane is fed — so it buckles into cortical folds that never self-intersect.
Loudness → growth rate. Pitch (spectral centroid) → the angular sector that grows, so high notes bloom the top, low notes the bottom. Each insertion rings a continuous-pitch grain (tighter fold → higher partial, x-position → pan); a drone pad opens its filter as the total curve length grows. Silence lets it rest and breathe.