You may be interested in Dimitri Tymoczko's 2011 book *A Geometry of Music* ([author link][1]; [Oxford link][2]): he "describes a new framework for thinking about music that emphasizes the commonalities among styles from medieval polyphony to contemporary rock." As an example his work, he's made [a video of Chopin's E minor prelude][3] "as it travels through a slice of the four-dimensional space containing seventh chords." <br /> ![Trichord Prism][4] [1]: http://dmitri.tymoczko.com/geometry-of-music.html [2]: http://www.oup.com/us/catalog/general/subject/Music/MusicTheoryAnalysisComposition/?view=usa&ci=9780195336672 [3]: http://dmitri.tymoczko.com/ChordGeometries.html [4]: http://cs.smith.edu/~orourke/MathOverflow/TrichordPrism.jpg