I found CTP in the artbot section of Robogames with his Arca Musarithmica. Check out his photoset of it and watch the video.

Arca1

This experimental musical instrument gets it’s name from an autonomous musical instrument invented by Athanasius Kircher, a Jesuit priest, in the 16th centurey. Kircher was a brilliant inventor, scientist, and creator, but isn’t very well known today.

Arca2

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Click here to get the video (MP4) delivered automatically with iTunes. This video will play on PC/Mac/Linux/PSPs and iPod video devices – Link. Here’s the teeny 3gp video for phone watchers. Youtube too.