The soundtrack of The Triplets of Belleville is composed by Benoît Charest and features a unique blend of jazz, swing, and orchestral music. It complements the film's quirky animation style and storytelling, enhancing the emotional depth and humor throughout the narrative. The music is instrumental, with catchy melodies that reflect the film's vibrant atmosphere. The soundtrack includes memorable tracks like "Belleville Rendez-vous," which captures the essence of the film's setting and characters. The score plays a crucial role in conveying the story's themes of perseverance and nostalgia, making it an integral part of the overall cinematic experience.