Final answer:
Boethius wrote about the music of the universe, which was related to the movement of the planets and stars. This idea of cosmic harmony can be traced back to Pythagoras.
Step-by-step explanation:
Boethius wrote of the music of the universe. Boethius was a philosopher who lived in the late Roman and Christian worlds. He believed in the idea of cosmic harmony and the music of the universe, which was related to the movement of the planets and stars. This idea can be traced back to Pythagoras, who taught that each planet produced a note as it moved, creating a perfect harmony called "the harmony of the spheres."