I've decided to let you all in on my project early. It will be more interesting that way. I have entered a contest to win an Eclipse trumpet. The contest is over on Monday. I don't know when the results will be out. Below is the forum my entry is located at. I have written a short story, and built a model of a trumpet, and would post the story here, but I feel I ought to wait until the contest is over. Check it out here if you want to read it early. It is posted there under the handle busnutmedic. There is a picture of the trumpet there - a miniature model with working valves, made out of polymer clay.