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Deceptive Cadences and Imperfect Cadences: Musical Functions
Deceptive and imperfect cadences serve roughly similar functions in music as commas and semicolons serve in written language. But, again, no equivalent exists in spoken language.
Amd it’s not that the authentic (or full or perfect) cadence, V – I, is always used as a period or full stop. In music, the V – I cadence also shows up in many subtle, often transient ways, depending on the musical context.
In the minor mode, the chord progression III – VIm serves as the “V – I” (the full cadence) equivalent, because scale degree 6 of the major mode is the tonic note of the minor mode.
Enough about cadences, already. It’s almost time to move on to the final tweak of the harmonic scale. After which it’s on to the fun stuff (finally): how to use harmonic scales to create beautiful, powerful chord progressions. With lots of examples in the form of some of the world’s greatest songs.