SOS by David fried is series of kinetic sculptures / art installations. It represents how the universe is interconnected and different elements move in their own rhythm. The sculptures are activated by ambient sound. Every sphere is of different size to give “individual character” to the element. Spheres are carved out of solid rock, sand or made using synthetic polymers as explained by the artist.

Self Organizing Still-Life [sos] selected artwork remix from David Fried on Vimeo.

The technology is not explained, but my guess is microphones are used to detect the ambient sound and possibly magnets are used in the base of the installation to trigger the movement.
I find the installation quite organic and seamless. Even though technology is used, it is not to be seen or felt in any manner. The installation replicates the movements in the real world, metaphorically.

See the entire series here