Abstract: A keyboard musical instrument is disclosed which comprises a plurality of keys connected to a sound generating mechanism arranged to play the notes of the musical scale, wherein (a) the instrument is housed in a casing having an upper surface on which a musical stave is depicted; (b) the keys are arranged to operate a display device which in conjunction with said stave provides a visual display indicative of a given note when the key corresponding to that note is played; and (c) the display device includes a plurality of rod carrying indicia which are movable independently from the keys and which generate the sound corresponding with the indicia scale by push-down motion therein also.

Abstract: A piano type music instrument having playable keys provided in the front of the box, with a sound maker connecting to the keys to make a sound corresponding to the key pressed. A music scale is printed on the box, and in the scale holes are located in the positions corresponding to the music scale notes. A rod inserted in each hole is supported by a link or a pliable tongue member made of thin metal, hard paper of plastic material. The tail ends of the keys are located beneath the pliable tongue or the rod so as to push up and down on the rods smoothly. When a key is pressed down, a corresponding note rod is made to protrude up through a corresponding hole in the printed musical scale, to identify the musical note played and sounded.