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All in 2 is an electronic instrument or a music operation interface (for example, to apply on smart phone or flat panel computer, etc, electronic products). The right hand will play the rhythm, the press key from Do to Si total seven intervals; the left hand adjust the musical scale, the higher the press key, the higher the scale. And when right and left finger each presses a key, it may play all of the music notes to simply the playing technique to make the playing easy to learn.
National Cheng Kung University
National Cheng Kung University Department of Industrial Design