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Augmented sixth chordlocked

  • William Drabkin


A chord built normally on the flattened submediant and containing the note an augmented 6th above (i.e. the raised subdominant): in C major, A♭– F♯. The normal resolution of this interval is outwards to the octave; thus an augmented 6th chord characteristically resolves to the chord of the dominant or to a I6-4 chord. The character of an augmented 6th chord is largely determined by the other notes it contains. The simplest type, commonly (but arbitrarily) called the Italian 6th chord, has a major 3rd above the flattened submediant and resolves more easily to the dominant (...

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