The spheres of light are autonomous. When a person touches a sphere, or when the wind blows it, its color changes, and it emits a sound tone unique to that color. One after another, the surrounding spheres successively change to the same color and emit the same tone.<br><br>When there is no wind, and nobody touches the spheres of light, they begin to blink slowly.

Floating, Resonating Spheres

Floating, Resonating Spheres