| 摘要 |
PROBLEM TO BE SOLVED: To provide a device for automatic performance of a piano and for practice thereof, having a low-cost constitution used by being removably mounted on an existing piano A, capable of automatically performing the piano with acoustic musical sound according to performance information signals from an automatic performance control part or enabling a person to play the piano after the automatic performance, and enabling manual performance with acoustic musical sound and automatic performance with electronic musical sound to be provided solely or ensemble. SOLUTION: An auxiliary keyboard 11 having the same key arrangement as a piano A and auxiliary pedals 5 are disposed on a keyboard 2 and on pedals 3, respectively, of the piano A, A touch control means interposed between the auxiliary keyboard 11/the auxiliary pedals 5 and an automatic performance control part C, are provided for every key in order to transmit performance information signals synchronizing with touch operation, an auxiliary keyboard mechanism B made up by unifying the auxiliary keyboard 11, the auxiliary pedals 5, and the touch control means, is removably mounted on the piano A, and when the auxiliary keyboard 11 and the auxiliary pedals 5 are operated, corresponding keys of the piano A are simultaneously actuated. |
