The MD-BT01 from Yamaha provides the wireless user with a wide range of performance and composing music applications by connecting iOS devices and Mac computers with instruments that use the older 5-pin DIN MIDI connections. A wireless MIDI connection means not having to worry about plugging anything into an iOS device, and the devices themselves (iPhone/iPad/iPod touch) can also be charged while using apps without worrying about the battery running out. Features: Yamaha Music Applications for Enhancing Musical Performance Controller apps allowing one-touch configuration of digital pianos' internal metronomes and other functions Customize digital drum kits using an intuitive app interface Use with tone-generation apps to access a wide variety of sounds not available in the instrument itself Record daily practice sessions with ease, then play them back to analyze difficult passages Visual effects that add dynamic graphics to live performances