Electronic musical instrument, electronic musical instrument controlling method and non-transitory computer-readable storage medium

An electronic musical instrument controlling method comprising:

• the process execution step of, in accordance with an operation to at least one function operator associated with a process of accepting an operation which is performed by a player, executing the process associated with the function operator, wherein
• at least one processor executes the followings:
• deciding that musical performance is being performed or not in response to an operation to the at least one function operator,
• in response to deciding that the musical performance is being performed, executing the at least one process associated with the at least one function operator, and
• in response to deciding that the musical performance is not being performed, not executing the process associated with the at least one function operator, despite being operated to the at least one function operator.

A non-transitory computer-readable storage medium which records a program for making a computer function as:

• at least one processor which, in accordance with an operation which is performed on at least one function operator which is associated with a process of accepting an operation by a player, executes a process which is associated with the function operator, wherein
• the at least one processor executes the followings:
• deciding that musical performance is being performed or not in response to an operation to the at least one function operator,
• in response to deciding that the musical performance is being performed, executing the at least one process associated with the at least one function operator, and
• in response to deciding that the musical performance is not being performed, not executing the process associated with the at least one function operator, despite being operated to the at least one function operator.