I randomly found this on a french site called Daily Motion, it shows a machine playing a cracking little tune. I assumeit works on great timing and some sort of wind power to shoot little balls out of the holes for them to strike whatever it is that creates each noise. Anyway, enougb of my waffling, heres the vid.
Reminds me a bit of this Honda Advert:
Just goes to show, even engineering is an art form!