Well, that's this: https://en.wikipedia.org/wiki/Harmonic_function https://en.wikipedia.org/wiki/Harmonic_function vs. this: http://openmusictheory.com/harmo

Well, that's this: https://en.wikipedia.org/wiki/Harmonic_function https://en.wikipedia.org/wiki/Harmonic_function vs. this: http://openmusictheory.com/harmonicFunctions.html http://openmusictheory.com/harmonicFunctions.html Maybe, at some fundamental level, they are the same...