Plays Rock Band 3 Keyboard, Guitar & Bass Parts 2-octave Design With 25 Velocity-sensitive Keys Plays Real Keyboard Parts In The Rock Band Pro Mode Plays Like A Guitar Or On A Tabletop Use As Midi Keyboard Controller When Not Playing Rock Band (compatible With Most Midi Sequencers) All-new Keyboard instrument for Rock Band 3 Plays Rock Band 3 Keyboard, Guitar and Bass parts / Two-octave design with 25 velocity-sensitive keys ( Does not support Guitar/Bass Pro Mode) Play real Keyboard parts in the new Rock Band Pro Mode / Versatile layout: Play like a Guitar or on a tabletop 3 AA Batteries and Keyboard Strap included / Use as MIDI Keyboard Controller when not playing Rock Band (compatible with most MIDI sequencers)