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Philip Glass 1979 segment The Geometry of Circles for Sesame Street.

2:39

The Geometry of Circles is a series of unnumbered animation pieces created for Sesame Street in 1979 with music by Philip Glass. The shorts consist of the movement of six circles (each with a different color of the rainbow) that are formed by and split up into various geometric patterns. Glass's music underscores the animation in a style that closely resembles the Dance numbers and the North Star vignettes written during the same time period as his Einstein on the Beach opera.