The Diatonic Piano Exercise and MORE!!! This exercise will give you the confidence to play more comfortably in ALL 12 keys - Congrats to Caleb Hensinger on winning the P-330 Sound Module; after 9 different video attempts, he completed the exercise within THE FIRST DAY!!!! Here's his video submittal: youtu.be/GzMZeQrVkNk www.PrettySimpleMusic.com