The concept introduced is a theoretical mapping model integrating major and relative minor keys within the Circle of Fifths to resolve structural ambiguities in key signature identification and modal relationship visualization. By positioning each minor key on an inner concentric ring corresponding directly above its relative major counterpart, the system establishes that both modes share identical pitch-class sets despite differing tonal centers. This abstraction transforms the traditional circle from a sequential arrangement solely for ascending fifths into a dual-modal topology where adjacency indicates shared scale degrees and rotational distance signifies harmonic difficulty between any pair of keys or their respective modal variants.
The concept introduced is a theoretical mapping model integrating major and relative minor keys within the Circle of Fifths to resolve structural ambiguities in key signature identification and modal…