Your computer stores all of your player piano Type 0 digital MIDI files. The iMid MIDI controller comes preloaded with over 450 digital MIDI files consisting of classical and popular music titles ready to play on your piano. Using the included PianoMID MIDI application, your computer sends your digital MIDI music files wirelessly directly from your computer or over your home WIFI network to the iMid MIDI controller hidden on your piano.You will have full control of volume, note transposition (up to two full octaves above and below the original key) and tempo (playback speed in beats-per-minute). Note: The WIFI iMid controller is NOT a MIDI streaming device subject to transmission latency (note delays) and errors common with inexpensive Bluetooth MIDI streamers. You will experience a fully expressive music performance exactly as it was recorded by the performer. The item "PianoMID MIDI Controller PianoDisc CD, PIanoDIsc IQ, QRS, Yamaha Player Piano" is in sale since Tuesday, January 9, 2018. This item is in the category "Musical Instruments & Gear\Vintage Musical Instruments\Vintage Pianos & Keyboards\Pianos\Player Pianos". The seller is "pianomid" and is located in Jackson, California. This item can be shipped worldwide.