Abstract: A game system comprises a storage device which stores data for reproducing music and data which define a performing procedure corresponding to the music, an operation input device for receiving an operation of a player, a reproduction device for reproducing the music based on the data for reproducing the music, and a performing operation instructing device for instructing the player to do performing operations associated with reproduction of the music onto the operation input device based on the data which define the performing procedure. The system further comprises a practice range setting device for setting a practice range on at least one portion of the music according to an instruction from the player, and a practice instructing device for instructing the player to practice the performing operations included in the practice range based on data corresponding to the practice range set through the practice range setting device in the data which define the performing procedure.