ELECTRONIC MUSICAL INSTRUMENT

An electronic musical instrument, which carries out a plurality of process functions, comprises a plurality of operation elements, function designation device, setting device, reading device, assigning device, and control device. The plurality of operation elements is operated. The function designation device stores function designation data which designates a plurality of functions corresponding to one of a plurality of process functions. The setting device freely connects or disconnects the function designation device with the electronic musical instrument. The reading device reads out the function designation data stored in the function designation device. The assigning device respectively assigns the plurality of functions, designated based on the function designation data, to plurality of operation elements. The control device carries out the functions respectively assigned to the plurality of operation elements when the plurality of operation elements are respectively operated. Therefore, the electronic musical instrument carries out a plurality of process functions by changing the function designation device to be connected therewith.