The sound in Serenitycreates suspense and jeprody. It does this by using fast techno music consistently in the background behind the dialogue. The fast tempo creates tension because it makes the viewer expect something to happen. The loud drum beats and techno sounds is a common convention in Action and Adventure. Another sound effect used was mechanical sounds, weaponry and computer sounds, this gives a futuristic feel and the sound of weaponry creates the feeling of a war and a sense of danger.
Later on in the scene when the rebels enter the building in the city the music picks up in pace and then dramatically stops when the girl uses her powers which creates suspense and tension.