An electronic musical instrument (1) includes an operation receiver (10) that receives an input operation and a processor (40). The operation receiver (10) includes a rotating wheel (12). The rotating wheel (12) includes a first light emitter (31) that emits colored light. The processor (40) causes, upon the rotating wheel (12) receiving an input operation, the first light emitter (31) to change an emission color from a color at a start of the input operation to a color corresponding to a rotation angle of the rotating wheel (12) having received the input operation.