Large Steel Balls installed in Poland

Two large steel balls. one size of 3.94meter .one size of 2.75 meter sit on each river blank. There’s resonator integrated inside the spheres.It connect by wire with bridge.In this way it all gets connected, the wind, the river, the walkway, the local culture, and the architecture is reflected together with its inhabitants in the surface of the spheres.
you can listen the symphony from the large steel sphere on the following video.