Press a key with your mouse to play it. Use the left and right arrow keys to do some cool pitch adjustment thingy. Press the button to switch between two instruments. Use the slider on the right (up and down) to adjust volume. I only made this to satiate my need for something to do with my drawing tablet lol (not that it really works with my tablet T^T) I can play part of dr wilys castle, so its good enough for me.
