27.4: The Special Resolution of vii∘7 (and viiøø7)
27.4 The Special Resolution of vii∘7 (and vii ø ø7)
The viivii∘7 and vii ø viiø7 chords consist entirely of tendency tones (7^ , 2^ , 4^ , 6^ ). If one resolves all of those tendency tones correctly (2^ –1^ , 4^ –3^ , 6^ –5^ , 7^ –8^ ), one might write parallel 5ths depending on the voicing of the viivii∘7 and vii ø viiø7 chord. Therefore, be sure to memorize the following principle:
Principle 27.4.1. Resolving viivii∘7.
When the 7th of a viivii∘7 or vii ø viiø7 chord is voiced above the 3rd of the chord, resolve the 3rd of the chord (scale degree 2^ ) up by step while resolving all other tendency tones normally (4^ –3^ , 6^ –5^ , 7^ –8^ ).
The third measure above shows that revoicing the chord is another solution, since parallel 4ths are not objectionable in this situation.
If the 7th of the chord is voiced below the 3rd of the chord, resolve all tendency tones normally.