A Symphony of Noise takes the viewer on a journey with Matthew Herbert, right into the mind of the revolutionary British musician and composer who is known for his outstanding pieces combining music derived from real life sounds with politically sensitive issues. Over the course of 10 years, director Enrique Sánchez Lansch has accompanied the musician in his creative process of conceiving, recording and performing his most exciting projects and diverse activities. For the British artist, music is not just a product but a process. In A Symphony of Noise, the audience experiences directly how Herbert makes music out of everyday sounds and noises. What drives this exceptional artist, and why does changing the way we hear mean a revolutionary act to him?