| 摘要 |
<P>PROBLEM TO BE SOLVED: To give advice, while an instructor pays attention to a pupil's performance, in a state where the instructor and the student play music side by side. <P>SOLUTION: When a key belonging to a second key area 11b is operated, a CPU 21 determines whether a key belonging to a first key area 11a, in a certain correspondence relationship with the key belonging to the second key area 11b in terms of pitch is pressed; and when the key is not pressed, stores a record of performance data based on an operation of the key belonging to the second key area in a RAM 23. The CPU 21 counts the number of times of non-operation which shows the number of times that the key belonging to the first key area 11a in the certain correspondence relationship is not pressed. When the counted number of times of non-operation becomes larger than the predetermined number of times, the CPU turns on an LED corresponding to the key belonging to the first key area, based on the record of the performance data stored in the RAM 23. <P>COPYRIGHT: (C)2011,JPO&INPIT |
