Open this on a phone with headphones. Your device's attitude steers the listener through the sound field; a firm shake strums everything on screen, left to right.
tilt γ — · β — · waiting for motion…
🎧 spatialization is HRTF — headphones make the field real.
📳 iOS asks permission for motion sensors on your first tap.
↔ tilting left/right slides your ears across the room (γ → ±4 m).
🤝 the grid is nine siblings: tap across a row and you're playing a scale.