ABSTRACT
Augmented sixth chords are predominant chords that are native to the minor mode and consist of scale degrees ↓6 (typically in the bass), 1, and ↑4. They get their name from the interval formed between the sixth scale degree and the raised fourth scale degree. An additional tone is often present, giving the chord a unique sound and name. Those names are:
Italian No additional tone or doubled scale degree 1 French Additional scale degree 2 German Additional scale degree 3
These chords lead to the dominant by having scale degrees 6 and #4 move away from each other by half step to form an octave. The remaining tones usually resolve down by step or stay on the common tone. The remaining tones in the German augmented sixth almost always delay their resolution by one chord, creating a cadential six-four chord. This helps to avoid problems with parallel voice leading.
