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Simple music performance system, music data supplier and computer program installed in the music data supplier

Image Number 5 for United States Patent #7507896.

At least one musical instrument, a server computer, a mobile telephone and a communication network form a music performance system; the owner has registered the musical instrument with a client database in the server computer, and a user transmits a request for music data distribution service to the server computer through the mobile telephone; upon reception of the request, the server computer searches the client database to see whether or not the owner has contracted the provider for the music data distribution service; when the server computer finds the owner in the client database, the server computer transmits a set of music data codes directly to the musical instrument so that the mobile telephone is shareable between the musical instrument and another musical instrument.

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