Yamaha YPG-535 88-Key Portable Grand Piano with Stand and Power Adapter 88 piano-style keys with Graded Soft Touch. Includes stand, adapter, and sustain peda USB To Device: connect USB storage devices (storage device optional) Large Wave ROM features extra high quality Live! Grand sample Backlit LCD (320 x 240) displays lyrics, chords & notation Performance Assistant Technology features Melody Mode in addition to Chord and Chord/Free Model