One of the major parts of any successful and dynamic film is the music. The score is essential in keeping the piece moving along within the frame of the story. The score encompasses all the emotion of the film mixed with the emotion of the story. The result is the viewer becomes invested in the film emotionally and is therefore affected by its outcome. In essence, for that hour and a half to two hours, each person watching with interest is not a part of reality. They are sitting and investing, sitting and becoming vested.
Music is power. The symbols used in video today are sinister in nature. Looking back, there has always been something sinister within all music... and when music of any kind comes with a really good story, that kind of influence and power over people is exactly what a certain kind of people are looking to attain. The more we sit in front of a screen, the more we lose ourselves within (a) fiction that will ultimately begin to make us question... reality.