Ideal for the beginning or returning piano student, this innovative music instruction book is designed to work with your smart phone to let you hear what you should be playing. Along with full-page illustrative diagrams of more than 100 chords (with left-hand fingering on the left page and right-hand fingering on the right), each page features a small QR code to be read by your phone, which will then play the chord from a dedicated website, so that you can hear what it should sound like as a chord or arpeggio (for piano or guitar).