23120 · sever

Reach in and pull the ringing apart from the hammers

One real take of Karel’s piano is separated — once, offline — into two living layers: the sustained resonance and the hammer attacks. Then you re-balance and re-time them with your two hands, and watch the split cleave a reaction-diffusion field in two.

The separation is a heavy one-time pass (a few seconds). Allow the camera for two-hand control, or use a mouse — both work.