The instrument is designed for lessoning with ease for those who are unable to read the music notes. This instrument comprises a tape(1) wound with constant velocity of which the front side of tape is printed with the ordinary music and the other side with the contacting part(5) corresponding to pitch and rythm, elastic member(7) to contact with contacting parts(5) and signal lamp(8) to indicate the keyboard of piano according to the musical note of the tapes.
展开▼
