Landscape sound art, "Nature versus Synthetics" by Ronald Van Der Meijs,2008, Materials: welding, chrome bicycle bell caps | "The installation 'Nature' is a site specific composition from 5000 chrome bicycle bells that are swaying in the wind of the polder in a natural way, as a reed. Causing them to call each other in a rather subtle manner and cause a soft twinkling noise.
And here you can hear the sound. Relaxing. http://www.ronaldvandermeijs.nl/nature%20versus%20synthetics.mp3