A ball rolls down a mile-long ladder of wooden steps, which are in fact the keys of a giant xylophone, hidden in the forest in Kyushu, Japan. As it trips down the staircase, the ball plays the notes of Bach’s famous Cantata 147 – Jesu, Joy of Man’s Desiring. A gentle rejoicing melody for Christmas. This film was made in 2012 to advertise Touch Wood mobile phones.