Sound is very important in an opening title sequence of any films or TV programs. It helps to foreshadow the theme and emtion that is being shown by the character or place on the screen. During horror films the audience will notice that in the opening title sequence the music or sounds will go very intense and dramatic or even very faint which will make the audience feel fearful and scared of whats going to come up. Here are some examples of sound in other horrors:
In the trailer for insidious there is a range of music and sounds that is used. Firstly we hear the sound of the clicking thing which is creating atmosphere and confusion as we are unaware why this is happening and we are glued to our seats to find out why this man is having to relax because of the noise. This is continuously played throughout the trailer to create an atmosphere and increases the in-tenseness. We then start hearing noises coming from the family giving us a happy sense and that they were clearly very happy with there life but still we are thinking about the clicking noise that we first heard. Then there are a lot of loud noises such as screams and bangs which could make the audience flinch or scare them as you are unaware that they are going to come up. Without having this music in the trailer then you wouldn't be able to feel the sense of fear that the family are feeling and the audience wouldn't fear for them as much.
Another example is seven. There is a range of sounds and music in this opening title sequence. All the way through the clip is a soundtrack which adds tension to the clip this is an example of non diegetic sounds. It would make the audience feel on edge but also wonder what is going to happen throughout the opening title sequence. As the music is very dramatic it adds to the tension. We also here bits of dialogue added throughout the clip which makes us wonder who is talking and what they are talking about. Along with screams added which makes the audience feel something is already happening as the clip is being played which also makes the audience feel scared and creates a scary atmosphere.