A music composition introduction system consists of a user's audio system and a center for managing music composition information, both of which communicate with each other. The audio system has a preference database storing user's preference data. The center receives this preference data, and retrieves music composition information meeting the preference data from a music composition information database. The center then sends music composition information data corresponding to the retrieved music composition information to the audio system. This structure of this system can effectively introduce to each user a music composition meeting the user's preference.