Japan cell-phone ad stars a giant xylophone

This is just amazing—a three-minute Japanese cell-phone ad featuring a giant wooden xylophone (or really, a marimba) hand-built in the woods of Kyushu, Japan, that plays Bach's Cantana 147 ("Jesu, Joy of Man's Desiring") when a ball is rolled down it. Japanese ad agency Drill Inc. created the ad for NTT Docomo's Touch Wood SH-08C handset, which is encased in wood. Drill creative director Morihiro Harano conceived of the instrument—Kenjiro Matsuo of Invisible Designs Lab built it.