To allow the user itself to input a melody of a call tone.

In this method, the communication terminal is provided with a 1st memory that stores music scale and musical note data, and a 2nd memory that stores melody codes. When a melody input mode is set through prescribed key entry, a 1st process (207) where entry of music scale is sensed, a 2nd process (217) where information corresponding to the sensed music scale and musical note key data is read from the 1st memory to generate a melody code, and a 3rd process (227) that stores the generated melody code to the 2nd memory by prescribed key entry are executed.