Information processing method and electronic musical instrument

An information processing method comprising:

• causing one of an electronic musical instrument and a terminal capable of bidirectional short-range wireless communication with the electronic musical instrument to perform an operation according to an operation pattern including an operation of repeating, in a predetermined pattern, at least one of transmission of a reading request of data and transmission of writing target data and a writing request for the writing target data while the electronic musical instrument and the terminal are in a state in which the short-range wireless communication is possible;
• and causing the other of the electronic musical instrument and the terminal to perform a process of transmitting corresponding data when the reading request corresponding to the operation pattern is received, and perform a process of writing the writing target data when the writing target data and the writing request for the writing target data corresponding to the operation pattern are received.