The play had very few occurrences of any music. The play mostly used music only for transitions between scenes–so as to reflect the end of one chapter and the start of another–in accordance with the dimming of the lights. The transition music itself was very ominous, due to the use of bells, drums, and at times, what sounded like, violins. This reflected the tone of the play overall, because neither the music nor the play were very uplifting or happy, per se.

There was also a low humming noise that was playing in the background during some scenes, in order to create a feeling or sense of unease. This is because it allowed the audience to feel nervous or edgy much like the characters during the scene. One scene where this was used, was when Thérèse is talking about her guilt for murdering her husband, and the audience was almost able to feel closer to and relate to her instability.  This technique was brilliant, because this was something that not everyone noticed, but it was able to affect everyone in the audience.