76 full-size Touch-sensitive keys - Add dynamics to your playing. Play lightly, and the volume is soft. Strike the keys hard, and it's loud. Enhance your skills with extended range and touch sensitivity to build playing technique. Keys to Success - Guides you to learn songs one step at a time (or one hand at a time ) at your own pace. Touch Tutor – Teaches you how to play music at different volumes based on touch. Smart Chord - Easily play great-sounding chords - from simple pop triads to complex jazz chords - with just one finger.