| 摘要 |
PROBLEM TO BE SOLVED: To easily grasp the presence/absence of abnormality in the case of monitoring a plurality of devices.SOLUTION: A storage part 11 stores a plurality of part data 13a, 13b and 13c (first part data) indicating a plurality of musical parts to be reproduced in parallel, the musical parts having the height of the sound, which changes in accordance with the lapse of time. A control part 12 is configured to, when any abnormality is not detected in any of devices 21 to 23, control music to be reproduced by using the part data 13a, 13b and 13c. Also, the control part 12 is configured to, when abnormality is detected in the device 22 as a part of the devices 21 to 23, convert the part data 13b of the musical parts corresponding to the device 22 into part data 14b (second part data), and to control music to be reproduced by using the part data 14b and the part data 13a and 13c of the other musical parts. |
