Electronic musical instrument, processing execution method, and processing execution program

A processing execution method, executed in an electronic musical instrument comprising a keyboard having a plurality of keys, the processing execution method comprising:

• a registration step, after a key is depressed, registering the key to a key group in a case where a depressed position of the key is between a determination start position and a determination end position which is a position lower than the determination start position;
• a normal processing execution step, in a case where a depressed position of a key not registered to the key group reaches an execution start position which is a position at or below the determination end position, or in a case where a depressed position of a key registered to the key group reaches the execution start position in a state where the number of keys registered to the key group is one, executing normal processing based on these keys;
• and
• a special processing execution step, in a case where a depressed position of a key registered to the key group reaches the execution start position in a state where the number of keys registered to the key group is two or more, executing special processing which is special processing based on the key and is different from the normal processing.

A non-transitory storage medium, storing a processing execution program, wherein the processing execution program causes a computer comprising a keyboard having a plurality of keys to execute processing based on the key depressed, the processing execution program causing the computer to execute:

• a registration step, after a key is depressed, register the key to a key group in a case where a depressed position of the key is between a determination start position and a determination end position which is a position lower than the determination start position;
• a normal processing execution step, in a case where a depressed position of a key not registered to the key group reaches an execution start position which is a position at or below the determination end position, or in a case where a depressed position of a key registered to the key group reaches the execution start position in a state where the number of keys registered to the key group is one, execute normal processing based on these keys;
• and
• a special processing execution step, in a case where a depressed position of a key registered to the key group reaches the execution start position in a state where the number of keys registered to the key group is two or more, execute special processing which is special processing based on the key and is different from the normal processing.