Soundtrack on other films

Soundtrack is used within the opening of films to great the genre, as a film could be scary, but then use a childish piece of music on top which would change the genre to something completely different, which is why getting the music right is very important.
For example, the film Se7en, uses city sounds as well as other dietetic sounds such as putting cups in a sink, footsteps, picking up keys, light switches, speaking and rain. The speaking emphasises dominance and tension as there is interruption. Then a metronome is used which emphasises the order and precision, which also covers the harsh city sounds. There is a crack of thunder which leads to the screen going black and the opening credits starting. In its opening credits, uses glitchy sounds such as a loud boom, scratching, creaking, screeching and breaking glass which all then come together to create a beat after showing them separately in a cycle. The music gets louder as is finishes, emphasising the inevitable end. The song used and edited is 'Closer' by 'Nine Inch Nails' which is a heavy, hardcore rock song. This links with the genre due to the grungy feel.

The film Essex Boys in the opening credits and scene uses silence for the beginning whilst true facts are placed upon the screen about the actions within the film creating suspense and tension. This goes on for the first 35 seconds of the film. Then, the silence is replaced with screeching and humming which stops and starts creating more tension, sounding almost like chalk on a chalkboard. This is replaced with clanging metal. After this, the sound goes to the diegetic sounds of a creaking metal door, light switches, foot steps and a car door opening and closing. Then, a voice over is present, using  typical British male voice. Non-diegetic music is placed over the top as we see the car driving, which uses rocky music with an almost electronic edge to it. There is shouting in the background with the sound of punches and kicks, which are supposed to be diegetic but were added in afterwards.

The film Layer Cake mainly uses a voice over of a very British voice interrupter by a surprising large crashing sound. The voice over continues. There is a piece of classical appearing music, which over time is sounded out by screaming and shouting, but then the music turns almost electronic sounding wth beeping sounds throughout. The voice over uses a match-cut as the voice is in sync with what someone says on camera. These completely overtake the scene as we focus on the voice slightly more than the image as the voice is telling a backstory.