An information processing device that controls a first application and a second application that functions as a plug-in that extends functions of the first application. The first application includes a control unit that controls operation of the second application in the first application, and the second application includes a selection unit that selects setting information for controlling a composition function based on machine learning, and a transmission/reception unit that transmits the setting information to an external server that executes a composition function based on machine learning and receives music data composed by the external server through a network.