Another way that the chorus can heighten tension is through the use of contrast. The chorus can provide a contrast to the verses, either in terms of musical style, tempo, or lyrics. This can create a sense of unease or disorientation, which can add to the tension of the song. For example, in the song "Stairway to Heaven" by Led Zeppelin, the chorus features a gentle acoustic guitar strumming, while the verses are played on electric guitar with a heavy distortion. This contrast between the two sections of the song creates a sense of tension and anticipation.
Finally, the chorus can also heighten tension through the use of lyrics. The lyrics of the chorus can be used to convey a sense of urgency, danger, or conflict. This can add to the overall intensity of the song and create a sense of anticipation for the resolution of the conflict. For example, in the song "Gimme Shelter" by The Rolling Stones, the chorus features the line "War, children, it's just a shot away," which conveys a sense of imminent danger and uncertainty.
In conclusion, the chorus of a song can heighten tension in a variety of ways, including through the use of repetition, contrast, and lyrics. By creating a sense of urgency, anticipation, or unease, the chorus can help to build suspense and create a more impactful and memorable song.