Musical instrument, method and recording medium

A method for a musical instrument having a position sensor that detects position coordinates of a music playing member that can be held by a player on a virtual plane, the method comprising the steps of:

• determining whether, at a timing at which a specific music playing operation is made by way of a music playing member, the position coordinates of the music playing member belong to a region arranged on the virtual plane based on layout information defining regions arranged on a predetermined virtual plane;
• instructing, in a case of determining as belonging to the region, generation of sound of a musical note corresponding to the region;
• and
• modifying, in a case of determined as not belonging to the region, the layout information in order to modify the region so as to include the position coordinates of the music playing member.

A computer readable recording medium used in a musical instrument having a position sensor that detects position coordinates of a music playing member that can be held by a player on a virtual plane, the recording medium encoded with a program that enables the computer to execute the steps of:

• determining whether, at a timing at which a specific music playing operation is made by way of a music playing member, the position coordinates of the music playing member belong to a region arranged on the virtual plane based on layout information defining regions arranged on a predetermined virtual plane;
• instructing, in a case of determining in the step of determining as belonging to the region, generation of sound of a musical note corresponding to the region;
• and
• modifying, in a case of determined in the step of determining as not belonging to the region, the layout information in order to modify the region so as to include the position coordinates of the music playing member.