It may be an ad for a cell phone, but this video of a wooden ball rolling across a giant xylophone in Kyushu, Japan’s woodlands, is stunning. The creators confirmed to the New York Times in 2011 that no artificial music was added at all. The structure itself is quite amazing, the music is simple and charming, and background woodland noises add to the ambience. Bach’s Cantata 147, “Jesu, Joy of Man’s Desiring” has never been so appealing to an audience of all ages. You can also find an interesting behind the scenes video of the making of the xylophone on the cell phone company’s website.