Music can have a heavy effect in film. It sets a mood and makes the viewer predict what might happen or heighten the scene already taking place. Music can psychologically manipulate a viewer into thinking one way rather than the way they might have without music.

The video below begins with a very corny scene by the analyzers and the corniness continues throughout. That said, these guys make solid points on how differences in music can completely alter how the audience comprehends the scene. They show a scene from the corny intro and play it over with different types of music in the background. Each type of music influences the emotion pulled from the audience. An intense sort of music might make the view think a fight is about to take place, while a jazzy song might signal a love connection. The video pulls data from UCLA that observes how when people see someone do something, neurons in the brain fire off because we have learned correlations such as smile means happy, thus we naturally think happy when we see a smile. The same concept applies to music, like when we hear an increase in tempo, heart rates may increase. Sometimes it can be effective to have music opposite of what’s going on in the scene, such as a happy song while a brutal murder in taking place. This juxtaposition can sometimes emphasize the brutality of the scene and prove an effective method of garnering an emotional response from viewers.