Keyboard cover, storing method of keyboard cover, and electronic musical instrument

A storing method of a keyboard cover that includes:

• an upper surface cover that covers an upper surface of an instrument body including a keyboard in a keyboard protecting state;
• a front hanging portion that includes a handle which is provided extending in a longitudinal direction of the instrument body and is able to be bent to be deformed and that is provided at a front end of the upper surface cover so as to be able to hang down to cover a front end surface of the keyboard;
• and a locking piece that is provided at a rear end of the upper surface cover so as to be able to hang down on a rear end of the instrument body, the storing method comprising folding the upper surface cover and the front hanging portion that includes the handle in the longitudinal direction and turning the keyboard cover into a storable state of maintaining, with the handle, a folded state in which the keyboard cover is folded to be compact.