In 2012, scientists and engineers worked with a team of sound artists to build a xylophone in a forest in Kyushu, Japen. Stretching over a mile long, the xylophone featured hundreds of different-sized pieces of wood, each sounding an individual note when struck. With only a single push, a wooden ball cascades down the structure, hitting every resonant note of the Bach masterpiece, 'Jesu, Joy of Man's Desiring'. The xylophone was made by hand from 100 percent raw materials and, unbelievably, the video contains no special effects.