SIAM AN10: Dmitri Tymoczko Discusses Geometry in Music

What could be a better medium to communicate math to the public than the universal language of music? Ever since Pythagoras used numerical terms to express intervals between notes and derived musical tones from geometrical patterns, mathematicians have linked music to numbers. At the SIAM Annual Meeting in Pittsburgh in July, Dr. Dmitri Tymoczko made the connection with help from multimedia graphics and compositions by Chopin, Mozart and Schubert. Created by Adam Bauser of Bauser Media Group

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look up "the geometry of music TEDx talk by Bill Wesley, I think this was the chief geometry used by Pythagoras to understand music and the emotions it evokes