KORG’s Natural Touch mini keyboard has been carefully designed to assure playability while staying compact, and makes it easy to play chords or rapid phrases. Since the microKEY is USB bus-powered, you only need a single USB cable to connect it to Mac or Windows. There's no need to install a driver; just use your preferred music software (or install any of the applications provided with microKEY), connect it to your computer and start playing right away! The second generation of microKEY now supports easy connection to iPad and iPhone. The 25-key model provides a joystick that can also control pitch bend and modulation, as well as an arpeggiator function, giving you full control in spite of this model's space-saving dimensions, and providing a wealth of performance expression. You can use the octave buttons in conjunction with the key transpose function to play MIDI's entire range of notes. The 25-key model provides a sustain button that implements the damper function.