Instructions
Turn on your Nintendo DSi. Select the "Nintendo DSi Camera" channel from the main menu.
Select the "Album" option on the right side of the screen. Take a picture of a musical grid on your DSi (See Resources.)
Scroll through your list of images and select the musical grid.
Select the "Edit" option. Select "Graffiti" from the buttons at the top of the screen. The click "Start."
Press the "Clear" button on the top right-hand corner and then press the "Y" button on the control to remove the menus. Select "Stamp" and then choose the "Music Note."
Tap the note on your screen to play a musical note. Each area you tap on the screen plays a different musical note. This allows you to play the piano on your screen.