AS: What are the techniques in this opening?

Amityville (Douglas 2005)

• Shots of the protagnosit are used to set the scene and set up the main subject of the film
• Slow, tension building music is used in conjunction with the shots of the killings to add drama
• The fast cutting rate towards the end of the clip builds to the climax of the clips and has a dramatic effect on the audience. 
• The shots in these cuts vary when each killing takes place to add emphasis to each killing.
• The titles help to estbalish a location by telling the audience of the location in the film and creating tension

http://www.youtube.com/watch?v=hDoMgQxJMpI