In
music harmonic rhythm is the rate at which the
chords change. According to Joseph Swain (2002 p.4) it "is simply that perception of
rhythm that depends on changes in aspects of harmony." According to
Walter Piston (1944), "the rhythmic life contributed to music by means of the underlying changes of harmony. The pattern of the harmonic rhythm of a given piece of music, derived by noting the
root changes as they occur, reveals important and distinctive features affecting the
style and
texture."
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