Thanks for sharing, Owen, your lectures on color. Have you studied the phenomenon of difference tones, ? It is well established that these resultant tones are subjectively created in the inner ear, making our ears themselves practically the only naturally occurring objects that can create the harmonic series, which you describe in your early lecture. Members of all cultures have the same ear structure, yet these colors do not form the basis of non-western music. Why do you suppose that it was “Western” music that uniquely developed the major/minor scheme?