The score by Marco Beltrami is an absolute tour de force, it could even be considered another character in the film. Forceful and bludgeoning one minute and quiet and reflective the next, Beltrami has his players twist their instruments to generate tones and textures not usually associated with them. The layers of sound and percussion on display are incredible, and the opening track It Hears You reminds one of a classic Planet Of The Apes cue: it is disquieting and slightly wonky, but has an incredible hook that immediately lets you know you are in horror territory. Meanwhile, A Quiet Family is a beautiful piano track that prompts the listener to recall the life the family lived before a world of monsters took over. Pianos are detuned and electronics are layered over traditional instruments throughout this album to create something truly unsettling.