Abstract: A keyboard instrument is configured such that a flat panel-like display unit such as a liquid crystal display for displaying character information and/or images is provided on an instrument main body and that speakers, a recording/reproducing unit for multi media such as sound and/or image recording media, a microphone and a "karaoke" reproduction unit are connected to the display unit so as to improve the function of displaying a notation and/or lyric at the time of a performance, a performance function such as an ensemble performance or "karaoke" performance, and a tuning function.