A light sensor 19 is provided for detecting a position of a lever 14 (an intermediate position between an initial position and a terminal position of the lever 14) between an ON state and an OFF state of the lever 14, and a musical sound in accordance with the position of the lever 14 detected by the light sensor 19 is generated. That is, in each of the ON state of the lever 14, the OFF state of the lever 14, and the state where the lever 14 is therebetween, different musical sounds are generated when the head 6 is percussed. Therefore, compared with the conventional technique where musical sounds can only be generated based on the ON or OFF state of the lever 14, musical sounds of a greater variety can be generated.

An electronic hi-hat 1 has a rod movable up and down with an operation of a player. A top cymbal 2 has a striking surface that can be struck by the player. A bottom cymbal 3 comes into contact with or separates from the top cymbal 2. An optical sensor 7 detects separation dimension between the top cymbal 2 and the bottom cymbal 3. The optical sensor 7 detects separation dimensions of a plurality of areas that are displaced with inclinations of the top cymbal 2 and the bottom cymbal 3 with respect to the rod r. The plurality of areas where the separation dimensions are detected are located on a common circumference of the top cymbal 2 and the bottom cymbal 3 around the rod r as a center.