| 摘要 |
The purpose of the present invention is to help a user to easily learn right performance and musicality in a short time. The present invention comprises: a device to execute an application for piano performance practice as an electric device which is connected and linked to a digital keyboard or a master keyboard; a web server to communicate with the device by a wire-wireless communication network and to provide related data which is necessary for execution of the application at the request of the device; and a database (DB) server to store data related to the application and to provide the related data at the request of the web server to the web server. If the application is executed, the device transmits a device ID to the web server to process user authentication. The web server transmits the device ID to the DB server, receives right information corresponding to device ID information and present condition information from the DB server, processes a user authentication process, and transmits content list data which is necessary for piano performance practice and use history information to the device according to a user authentication result. |
