As an example, they can shift the harmonic rhythm to add variety and interest (rhythmic dissonance) to the music. Composers can use harmonic rhythm as a compositional tool.The tonic occupies an accented metric position more often than the dominant (the HC is a notable exception).When looking for cadence points and phrase separations, examining the harmonic rhythm is often helpful. The rate of chord change often accelerates or decelerates with the approach to a cadence and final cadence chords usually are metrically stronger than the chord that precedes them.Harmonies most often change on strong beats rather than on weak beats, and more often on downbeats than upbeats.When tempo is slow, harmonic rhythm is often fast. When tempo is fast, harmonic rhythm is often slow. Tempo and harmonic rhythm often display an inverse relationship.Patterns of harmonic change often help to define the meter.
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