Disklavier

Disklavier /ˈdɪskləvɪər/ is the brand name for a family of high-tech reproducing pianos made by Yamaha Corporation. The first Disklavier was introduced in the United States in 1987.

The typical Disklavier is a real acoustic piano outfitted with electronic sensors for recording and electromechanical solenoids for player piano-style playback. Sensors record the movements of the keys, hammers, and pedals during a performance, and the system saves the performance data as a Standard MIDI File (SMF). On playback, the solenoids move the keys and pedals and thus reproduce the original performance.

Modern Disklaviers typically include an array of electronic features, such as a built-in tone generator for playing back MIDI accompaniment tracks, speakers, MIDI connectivity that supports communication with computing devices and external MIDI instruments, additional ports for audio and SMPTE I/O, and Internet connectivity. Historically, a variety of devices have been used to control or operate the instrument, including buttons on a control box mounted on the piano, infrared handheld controllers, handheld wi-fi controllers, a Java application that runs on a personal computer, and apps that run on iOS-based portable devices.

Disklaviers have been manufactured in the form of upright, baby grand, and grand piano styles (including a nine-foot concert grand). Reproducing systems have ranged from relatively simple, playback-only models to the PRO models which record performance data at resolutions that exceed the limits of normal MIDI data. From the late 1990s into the early 2000s, Yamaha also produced a GranTouch series of Disklaviers that were digital pianos with a grand piano action. In addition to recording, the GranTouch instruments were capable of playing back performances with moving keys although the moving keys were not necessary for the electronic reproduction of sound.

Prior to the introduction of the Disklavier in the United States, Yamaha Corporation of Japan debuted an upright reproducing instrument in 1982 called "Piano Player". It featured a record-and-playback system, floppy disk storage of performance data, and the ability to playback multi-track performance files that included instrumental tracks whose sound was reproduced by a tone generator. There was also an upright model sold in Japan in 1985 known as the MX100R.

...
Wikipedia