I loved this video of pendulum waves from Harvard and knew immediately that Philip Glass would be the perfect accompaniment. "The Secret Agent Ending" from the album Glass Reflections by Cello Octet Conjunto Iberico and Elias Arizcuren "Tuning" from the Spamalot Original Broadway Cast Album More at: http://ub-sessed.blogspot.com/2011/05/ball-chain.html Follow me on twitter: @ub_sessed Check