There is provided an electronic musical instrument which is capable of muting by a simple operation. A plurality of fret operating elements are provided on a fingerboard, for determining the pitch. Six stringed operating elements for determining sounding timing are provided on a string input section of the body of the electronic musical instrument. A tone generator and a sound system generate musical tones according to operations of the fret operating elements and the stringed operating elements. A mute fingerboard larger in transverse size than the transverse region over which the six stringed operating elements are arranged is disposed on an operating element holder protecting section engaged with latches of the operating elements. The mute fingerboard is located in the vicinity of operated ends of the stringed operating elements within the range where the stringed operating elements can be operated, and is exposed on a surface of the body.