The document provides analysis of the trailer for the film IT. It notes that the trailer effectively builds tension through its use of changing music that gets more intense. It also discusses how the pacing of shots increases to build suspense as the trailer progresses. The remote small town setting is analyzed as adding to a suspenseful atmosphere with limited space to hide. Dark and emotionless post-production editing is highlighted as creating an eerie feel. The short length of the trailer is said to instantly grip the audience with suspense and fear.