There is nothing too small or remote to get beyond the reach of the Law of Duality; it follows the major and minor scales through all their inverse and reciprocal progressions, and by-and-by it appears at the extremity of complex music in the shape of inverse fugue. [Scientific Basis and Build of Music, page 44]

See Also

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12.18 - Multiple Octave Progression
arithmetic progression
arithmetical progression
evolution
Geometrical Progression
harmonic progression
musical progression
progression
progression of adjacencies
progression of keys
reciprocal progression