Abstract: One object is to allow users to enjoy digital contents more easily. The server according to an embodiment can execute a program including: a service control module; a screen sending module configured to send, in response to a request from a terminal, screen data of screens including a playback instruction screen for making an instruction for playback of a musical piece; a mode setting module configured to set, for each user, a playback starting mode selected from a plurality of modes including Normal mode and One-tap Playback mode; a playback control module configured to start playback of a musical piece; and a possession state update module configured to update a possession state of playback tickets in response to playback of the musical piece.