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Circle of fifths
In
music theory
, the
circle of fifths
(or
circle of fourths
) is a visual representation of the relationships among the 12 tones of the
chromatic scale
, their corresponding
key signatures
, and the associated
major and minor
keys. More specifically, it is a
geometrical
representation of relationships among the 12
pitch classes
of the chromatic scale in
pitch class space
.
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