A flat torus in four dimensions — no inside, no outside, no curvature — with the apparent inner and outer rims trading places as the projection fails, and a winding ratio the music walks between rational and irrational.
Drawn with: a WebGL2 shader.
Reacts to and looks like: gpu, webgl2 and audio-reactive.
Family: Visualiser.
Runs in your browser. The preview above is the same program the renderer uses.