Spielsystem und computerlesbares Aufzeichnungsmedium mit Steuerungsprogramm für das Spielsystem

摘要

To enable mark-up (i.e., scoring) of improvised (i.e., ad-libbed) musical performance and enable a player to enjoy performance with a degree of freedom in accordance with a performance instruction, a CPU (10) marks up improvised musical performance provided by a player using an actual keyboard (90) (step S920). Hence, a player accustomed to playing a keyboard (80) can be satisfied sufficiently.