The Silent Revolution utilizes non-diegetic music in this scene to build tension. Prior to this clip, the only sound was the teacher and the clock ticking in the background. While that was impactful too and highlighted the point of the protest, the slow transition to the music was extremely effective in emphasizing both the student’s anxieties, and the teacher’s growing frustration. Like the teacher, the music starts off quiet and slow, and has a more somber tone, comparable to the teacher’s disappointment in his students (particularly Kurt). As he continues to be ignored by other students, his rage builds, and the music begins to increase in volume. The climax of the scene, when Erik breaks his silence and reveals the protest, is paired with the crescendo of the music. The teacher is enraged and storms out of the classroom as the music blares, and then is abruptly cut off by the sound of the door slamming behind him. This abrupt ending symbolizes the cease of tension in the clip, as the student’s are relieved of their teacher’s presence. As previously stated, the building of the music highlights the increase in tension, but it also serves as a foreshadowing for what is to come for the students. This scene is just the quiet, slow beginning of a much larger issue that is only going to increase in scale.