http://www.treehugger.com/sustainable-product-design/record-play-adapted-play-music-tree-rings.html
German artist Bartholomäus Traubeck recently debuted a record-player he developed which is capable of digitally reading tree-slices and translating them into surprisingly moving piano music. Tree-rings, of course, considered to be annual records of a tree’s growth rate — which in turn offer clues to the hardships and fruitful periods experienced over the life of the tree.
