This website summarises a new theory which explains the relationship between chord progressions and voice leading and shows how chord progression patterns create musical phrase structures in tonal (and tonally influenced) music similar to sentence structures in natural language.

The site includes a book outline, and sections on how chord progressions work in Pop and Rock Music.

Try out the animated demos which now run on all platforms and are scalable to larger sizes.

The site includes examples of full musical analyses which use the theory to explain the structure of whole musical compositions and aspects of the style, period and mood of the music.

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