An electronic hi hat cymbal apparatus for detection of vertical movement, including an electronic percussion instrument, configured to be reversibly attached to a shaft of a stand such that the electronic percussion instrument is movable upward and downward by a foot pedal operating the shaft, and a coil, induced with alternating current so as to produce magnetic field in the vicinity thereof by an electronic circuit which is configured for oscillation, and a core, comprising metallic material, disposed such that it is overlapping with the coil during play. The overlapping portion is configured to vary with the upward and downward movement of the electronic percussion instrument such that eddy currents are formed in the core substantially in the overlapping portion thereof, thereby an output signal which vary in accordance to the overlapping portion can be formed by the electronic circuit.