The main themes are essential to a game. This is the music that starts the game, plays when the title arrives, and gives the first impression. The user will listen to it the most, so the composer must pay attention to every detail. This music is usually more complex; the subtle hidden melodies and small percussive effects will be appreciated when the listener will have run his game hundreds of times. This music should not be used in the action scenes except for combat or fighting where an epic melody will not disturb the player's focus.