From what characteristic do the class of chords known as augmented sixth chords get their name?
Explanation
The entire category of augmented sixth chords is named for its most defining feature: the presence of an augmented sixth interval, typically formed between the flat 6 and sharp 4 scale degrees, which resolves outward to the dominant.
Other questions
What two approaching tones form the vertical interval of an augmented sixth when resolving to the dominant?
What are the two essential scale degrees that form the characteristic interval of most augmented sixth chords?
In addition to the characteristic augmented sixth interval, which pitch class is included to form an Italian augmented sixth chord (It+6)?
What scale degree is added to an Italian augmented sixth chord to create a French augmented sixth chord (Fr+6)?
Which pitch is added to an Italian augmented sixth chord to form a German augmented sixth chord (Ger+6)?
How does the interval of the augmented sixth typically resolve?
What chord is the most common resolution target for an augmented sixth chord?
The resolution of which augmented sixth chord is most likely to result in parallel fifths when moving directly to a V chord?
What is the most common way composers avoid the parallel fifths that can occur when a German augmented sixth chord resolves?
In a four-part texture, which pitch of the Italian augmented sixth chord is typically doubled?
For what reason is a German augmented sixth chord sometimes spelled enharmonically when resolving to a cadential I6/4 in the major mode?
If an augmented sixth chord appears with a pitch other than the minor-mode flat 6 in the bass, how does this affect its analytical symbol?
When an augmented sixth chord resolves to a scale degree other than 5, how is this indicated in the analysis?
What harmonic progression illustrates the use of an augmented sixth chord as a neighbor chord?
According to the chapter, what pitch serves as the root of an augmented sixth chord?
Which augmented sixth chord is enharmonically equivalent to a dominant seventh chord of the Neapolitan (V7/N)?
What is the historical origin of the augmented sixth chord?
Besides the augmented sixth, what other characteristic dissonant interval is formed within a French augmented sixth chord between the bass note (flat 6) and scale degree 2?
In popular music and jazz, how might a French augmented sixth chord on G be symbolized?
According to the text, how are German augmented sixth chords frequently indicated in lead-sheet symbols?
What is a common function of an augmented sixth chord when used immediately following a modulation?
Which bass position, other than the customary one with flat 6 in the bass, occurs with some frequency for augmented sixth chords, especially in Romantic music?
When an augmented sixth chord is placed in a different bass position, what interval does the characteristic augmented sixth often become?
The Italian, French, and German augmented sixth chords all share the +6 interval and the tonic pitch. What distinguishes them from each other?
The text states that the analytical symbol for an augmented sixth chord is simply '+6'. What does the numeral '6' represent?
A German augmented sixth chord in the key of C minor consists of which four pitches?
A French augmented sixth chord in the key of A minor consists of which four pitches?
In a four-part setting of an Italian augmented sixth chord in G major, which pitches would be present?
While the interval of the augmented sixth usually resolves outward, what is a less common alternative resolution for the top pitch (sharp 4)?
When an augmented sixth chord is used in a major key, what harmonic device often precedes it?
Why are the parallel fifths that can result from a Ger+6 to V resolution sometimes considered not so objectionable?
In Example 22-12, how does Mozart turn a Ger+6 into another chord type just before the resolution to avoid parallel fifths?
In Example 22-8, a three-part sequence tonicizing i, VI, and iv leads to a half cadence preceded by what type of chord?
When an augmented sixth chord resolves to a secondary dominant, how is it best analyzed?
The German augmented sixth chord contains the interval of a minor-mode flat 3 above the bass note (flat 6). What quality of third does this create?
In Example 22-17, the Ger+6 chord resolves to a I6/4 chord. What is the function of this I6/4 chord?
In Example 22-5, an It+6 is shown in a three-part texture. Most of the excerpt consists of parallel 6ths surrounding what kind of texture in the alto voice?
In Example 22-14, how does the sharp 4 (B-natural 3) in the Ger+6 chord move to provide the 7th of the following V7 chord?
In Example 22-8, the Fr+6 chord in measure 8 is composed of which pitches? The key is F minor.
What is the correct way to label a French augmented sixth chord to distinguish it from a lead-sheet symbol for a chord on F?
In an Italian augmented sixth chord, what is the interval between the bass note (minor-mode flat 6) and the added tonic pitch?
The interval of an augmented sixth is enharmonically equivalent to a minor seventh. What is the key difference in their resolution tendencies?
In Mozart's String Quartet K. 173, I (Example 22-12), how does Mozart first avoid the parallel fifths of a Ger+6 to V resolution?
Besides the customary position and the one with sharp 4 in the bass, what is the only other bass position for augmented sixth chords that occurs with any frequency?
A French augmented sixth chord can be thought of as an Italian augmented sixth chord with what added pitch?
A German augmented sixth chord can be thought of as an Italian augmented sixth chord with what added pitch?
In the key of E-flat major, what two pitches form the augmented sixth interval?
In the excerpt from Mozart's String Quartet K. 173, II (Example 22-11), a Ger+6 chord resolves to a V chord. What progression precedes this Ger+6 chord?
In Mozart's Piano Sonata K. 457, I (Example 22-23), the It+6 chord in measure 44 is part of a tonicization of what chord?