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AP® Music Theory · Unit 7 · Topic 7.4

Part Writing Secondary Leading-Tone Chords

Watch it drawn3 questionsPractice

Watch it explained

  1. How it worksHow do both tritones inside a fully diminished seventh resolve at the same moment?
  2. Worked exampleWalk me through resolving the diminished leading-tone seventh of V to V in F major in four voices.
  3. Common mistakeWhy isn't the diminished fifth in a secondary leading-tone chord allowed to expand outward?

Check yourself

Your turn1 of 2
Both tritones inside a fully diminished seventh chord resolve inward by a half step at the same moment. If one tritone's upper note sits 9 half steps above middle C and resolves down by a half step, how many half steps above middle C does it land on?

End of topic.

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