I was visiting Ren's blog Lady of the Arts today when I saw the most incredible video. Filmed in the Japanese forest of Kyushu. A wooden ball goes down a very long wooden marimba playing Bach's Cantata # 147: Jesu Joy of Man's Desiring. The sound you hear comes from the actual marimba and is not super imposed.
I know when little "o" gets hold of this it will inspire him to do the same thing. Maybe we'll start with Twinkle Twinkle Little Star before we work our way through the Smoky Mountains with more dificult repetoire .This amazing instrument was made by Kenjiro Matsuo at Invisible Design Lab.