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48 Voice Leading

Special Situations

Avoid parallel fifths when the roots of triads are a second apart, as in the following examples:

  1. ii6 to I 6/4  (see the first measure in the examples below)
  2. I to viiº6 (see the second measure the in examples below)
    Moving from the ii6 chord to the 1 6/4 chord and from the I chord to the diminished 7 chord in first inversion can lead to parallel 5ths if not careful. The text directions explain how to avoid this problem.
    Figure 26.10.1. Parallel fifths when roots are a 2nd apart
    Moving from the ii6 chord to the 1 6/4 chord and from the I chord to the diminished 7 chord in first inversion can lead to parallel 5ths if not careful. The text directions explain how to avoid this problem.
    Figure 26.10.2. Parallel fourths as a corrective when roots are a 2nd apart

    In any such situation where the roots are a second apart (even if the chords are inverted), revoice each chord so the 5th of the chord is below the root of the chord in the upper voices. 

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