Deconstruction of Sound within Horror

What creates most of the tension and fear in horror films is a suspenseful sound track to accompany the horrific visuals. 
One such example of a soundtrack that adds fear and suspense in a horror film is the main title soundtrack of Halloween. 

Halloween has arguably one of the most iconic soundtracks in horror, with the melody instantly recognisable. The soundtrack builds tension by beginning with the rapid sound of chimes in a melody that creates a sense of suspense. Alongside this is a constant drumming noise, creating a rhythm that entices fear within the audience. This continues until eventually the intense sound of strings and piano builds to create a crescendo which builds tension. The intensity dies down slightly as the piano and strings ease off, but the chime melody continues throughout. More intensity is created as an organ is introduced which creates an authentically eerie sound.