Editing Augmented sixth chord (section)

==Augmented sixth interval==
{{Main|Augmented sixth}}
{{Image frame|content=<score sound="1">
    {
      \new PianoStaff <<
        \new Staff <<
            \relative c' {
                \clef treble \key c \minor \time 4/4
                fis1 g
                }
            >>
        \new Staff <<
            \relative c' {
                \clef bass \key c \minor \time 4/4
                aes1 g \bar "||"
                }
            >>
    >> }
</score>|width=300|caption=The interval of the [[augmented sixth]] normally resolves outwards by semitone to an octave.}}

The augmented sixth interval is typically between the sixth [[scale degree|degree]] of the [[Major and minor|minor scale]], {{music|flat}}{{music|scale|6}}, and the raised fourth degree, {{music|sharp}}{{music|scale|4}}. With standard [[voice leading]], the chord is followed directly or indirectly by some form of the [[dominant chord]], in which both {{music|flat}}{{music|scale|6}} and {{music|sharp}}{{music|scale|4}} have resolved to the fifth scale degree, {{music|scale|5}}. This tendency to resolve outwards to {{music|scale|5}} is why the interval is spelled as an augmented sixth, rather than [[enharmonic]]ally as a [[minor seventh]] ({{music|flat}}{{music|scale|6}} and {{music|flat}}{{music|scale|5}}). 

Although augmented sixth chords are more common in the minor mode, they are also used in the major mode by [[borrowed chord|borrowing]] {{music|flat}}{{music|scale|6}} of the [[parallel minor]] scale.<ref name="Aldwell478483">{{Cite book
 | last1 = Aldwell
 | first1 = Edward
 | author1-link = Edward Aldwell
 | last2 = Schachter
 | first2 = Carl
 | author2-link = Carl Schachter
 | year = 1989
 | title = Harmony and Voice Leading
 | edition = 2
 | location = San Diego, Toronto
 | publisher = [[Harcourt Brace Jovanovich]]
 | isbn = 0-15-531519-6
 | oclc = 19029983
 | pages = 478–483
}}</ref>