Have you ever seen a giant wooden xylophone in the forest? Just kidding, of course you haven’t! Well until now that is…. The Japanese adverting agency known as Drill Inc. built a giant wooden xylophone that’s roughly a mile long in the middle of a forest. Each wooden key is made up individual notes, and when a wooden ball starts rolling down it, it plays Bach’s famous Cantata 147. And yeah… they did all of this for a cell phone commercial.