Highly trained people know how to use music to enhance the effectiveness of violent scenes so that they influence others to the ends that they desire:
Aggressive behavior is more likely to occur when the violence is seen as part of highly exciting content (Tannenbaum and Zillmann 1975; Zillmann 1971).
Close-up shots, camera angles, and sophisticated film editing techniques can make violence even more graphic and larger than life. A steady undercurrent of music and sound effects also adds to the horror of many violent scenes. These techniques amplify fear in small children. Small children simply cannot comprehend that in real life, music rarely underscores an about-to-be-committed murder. The violent acts are often portrayed using these techniques so that the violent action becomes something of a climax. It’s an end result that brings with it a release of tension, and in that the act becomes a good thing because it relaxes the tone of the movie and the muscles of the viewer! It also releases the anxiety or suspense that has been built up in the viewer’s mind. In the real world, a child is more likely to exhibit aggressive behavior and to commit an act of violence to experience that same release of pent-up emotions. —Saturday Morning Mind Control, 57
These highly skilled people use music in such settings to manipulate young children who are defenseless against such manipulation. Beware what you expose your children to because they do not have the same abilities that you have to process highly emotionally charged situations that use music in this way!