this is a keyboard instrument in the field of production, as has always been a key scheme, assuming a keyboard musical instrument is played to the public, and the keys are frequently made to impress and fingering is not familiar to the difficulty, the general public a keyboard instrument of the easy access to play the instrument, completely didn't see can play music, fingering the simply do not pay attention, because the method through a high effect can be obtained, and the technical method to solve the in order to measure the health of a straight line of the form of a house on the keyboard you can set all the eight vertical. the keyboard to hold it up in the form of the system. the system structure of the middle of the keyboard to enable installation automatically. to solve them, no way, piano, organ, andelectronic musical instrument, a keyboard instrument in the production of all kinds of use may be.
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