Part 1 - Scroll saw automaton project
Here is a two part video tutorial from the scrollsaw workshop of Steve Good. Part one is shown above and part two is below. In the videos, Steve teaches you how to build an automaton using a scroll saw primarily. It's a wonderful tool that is more versatile than many people realize. Here you see it put to good use. The project plans the piano player automaton are available free of charge on Steve's blog.
Part 2 - Scroll saw automaton project
These videos are a fantastic resource, no doubt about it. This project is very similar to one by Rodney Frost published in his book Making Mad Toys & Mechanical Marvels in Wood. Pages 26 through 31 of that book provide plans for a piece called The Pianist (shown at right). This could be a case of independent invention or it could be that a tip of that hat is due to Mr. Frost. So, in the interest of fairness and completeness, I will take the liberty of doing that here. If you would like to do this project, and many others, Mr. Frost's book features a dozen or more excellent automaton projects.
[ Thanks Charles! ]