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GTTMS: Generative Theory of Tonal
The Generative Theory of Tonal Music (GTTM) was developed in the early 80s by composer Fred Lerdahl and linguist Ray Jackendoff. GTTM "relates the aural surface of a piece to the musical structure unconsciously inferred by the experienced listener." In 2002 I began working with Fred Lerdahl to write software that performs a GTTM analysis on music written in the style of Bach chorales. The result is a program that creates a visualization of unconscious musical structures. It also performs a complete Roman numeral analysis. For more info, see the FAQ.