Structure
- For further explanation see Chord progression
The upper tetrachord of minor scales varies: in C minor, the sixth may be A♭ or A while the seventh may be B♭ or B. To avoid confusion the chords of the progression may have accidentals added. The Andalusian cadence may then be notated i – ♭VII – ♭VI – V rather than simply i – VII – VI – V. The ♭VII note and chord is called the subtonic. In the final chord V the leading note replaces the subtonic.
Read more about this topic: Andalusian Cadence
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