They did some pretty impressive work. Most people don't realize how difficult it would be to tune each piece of wood to get just the right note. And then to get and keep the slope at just the right angle to keep the tempo going, that to is impressive. I wonder how many man hours were involved and how many trial runs they needed to get it right. This was not a simple project. And as a commercial, I think it ranks up there with the Superbowl ones. Almost no spoken words and yet the message is perfectly clear.