PROBLEM TO BE SOLVED: To enable musical lesson business with a small fund and easy management.;SOLUTION: In the system of giving musical lessons via a network system 1, a server 4 stores the communication address of an instructor terminal 3 and the communication address of a student terminal receiving musical lessons, transmits and receives, between the terminal devices corresponding to the stored communication addresses, exercise piece data and data relating to the playing of the exercise piece exchanged between an instructor and a student who have concluded a lesson contract.;COPYRIGHT: (C)2003,JPO
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