PURPOSE: To provide an operation device capable of desirably controlling the touch feelings of plural performance operating pieces of a keyboard, etc., and of plural input operating pieces using fingers, in an operation device in which the operation feeling, of the performance operating pieces of a keyboard, etc., or of input operating pieces making input operation by fingers, is controlled.

CONSTITUTION: Force is acted, independently from other performance operating pieces, on at least a part of plural performance operating pieces 1. For example, force 15 and 19 according to each pitch 25 is acted on every each performance operating piece. Force is independently acted on each input operating piece according to the kind of a finger in an operation device in which input operation is made using at least two or more fingers.