ALEXANDRIA, Va., Sept. 23 -- United States Patent no. 12,424,121, issued on Sept. 23.
"Music chord map" was invented by Michael George (Draper, Utah).
According to the abstract* released by the U.S. Patent & Trademark Office: "A Chord Map comprises three circular, independently rotatable, concentrically aligned layers of music information: chord array, mode numerals, and grouping. The chord array layer comprises an inner ring (12 major chords), a middle ring (12 minor chords), and an outer ring (12 diminished chords). Text, color, and shape are used to identify the chords, harmonic relationships, and intervallic distances. Spatial organization illustrates chord relationships. The mode numerals layer comprises an inner ring, a middle ring,...