The musical system known as the Circle of Fifths form specific geometries. All matter is a vibration in the structure of space-time and the study of the structure of space is called Geometry, therefore music and matter itself is Geometry in motion.
The link is actually about musical chairs reading. But another pinner said, "Musical chairs writing. When the music stops you pick up writing where the last person left off. Time intervals based on grade level." I liked that idea more.