"Geometry of Circles" is a series of unnumbered animation pieces created for Sesame Street in 1979. Cathryn Aison commissioned Philip Glass to write music for animation based on her storyboard which had been submitted to and approved by Edith Zornow of CTW. The film has featured in public screenings and museum exhibits. In October 2012, the third movement from the film was included in the "Century of the Child: Growing by Design, 1900–2000" exhibit at the Museum of Modern Art in New York City. File:Philip Glass - Sesame Street - Geometry of Circles