An electronic music apparatus has a tone generator settable by setting information to generate a music tone signal and an open memory area accessible for storing identification information of the electronic music apparatus and setting information specific to the electronic music apparatus. The electronic music apparatus reads out the identification information from the open memory area and sends the read identification information to an editing apparatus, and receives setting information from the editing apparatus and writes the received setting information into the open memory area. Further, when the setting information is written into the open memory area, the written setting information is applied to the tone generator. The editing apparatus has a storage for storing the edited setting information in association with the identification information of each electronic music apparatus. The editing apparatus receives the identification information sent from the electronic music apparatus, identifies the electronic music apparatus which sends the identification information, locates the setting information stored in the storage in association with the received identification information, and sends the located setting information to the identified electronic music apparatus.