(musTh211) Ch. 27: Modulation to Closely Related Keys, pt. 1

Today’s key topics:

Closely-Related Key

  • no more than one accidental difference between key signatures
  • new tonic chord of closely-related key is diatonic to original key

Common-Chord (Pivot) Modulation

  • pivot chord is usually chord before new dominant
  • pivot chord must be diatonic in both keys

Chromatic Modulation

  • usually involves direct motion to a dominant-class harmony (V or vii°)
  • chromaticism usually appears in bass
  • usually occurs early in a phrase to allow for establishment of new key with strong cadence


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