. . . . . "circle of fifths"@en . "relationship among the 12 tones of the chromatic scale, their corresponding key signatures, and the associated major and minor keys; geometrical representation of relationships among the 12 pitch classes of the chromatic scale in pitch class space"@en . . . "circle of fifths"@en . . . . . . . . . . . . . . "circle of fifths"@en . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .