Augmented seventh chord

Infobox Chord| chord_name=Augmented seventh chord
first_interval=root
second_interval=major third
third_interval=augmented fifth
fourth_interval=minor seventh

The augmented seventh chord Audio|Augmented seventh chord on C.mid|Play, or "seventh augmented fifth chord" [Kroepel, Bob (1993). "Mel Bay Creative Keyboard's Deluxe Encyclopedia of Piano Chords: A Complete Study of Chords and How to Use Them", p.15. ISBN 0871665794.] , is a seventh chord consisting of an augmented triad with a minor seventh. Thus it consists of a root, major third, augmented fifth, and the minor seventhGarner, Robert (2007). "Mel Bay presents Essential Music Theory for Electric Bass", p.69. ISBN 0786677368.] . It may be notated with the chord symbols C+7 or Caug7.

The root is the only optional note in an augmented seventh chord, the fifth being required because it is raised [Latarski, Don (1991). "An Introduction to Chord Theory", p.29. ISBN 0769209556.] . The augmented seventh chord normally resolves to the chord a perfect fourth above, thus C7+5 resolves to an F major chord, for example [Bay, William (1994). "Mel Bay Complete Jazz Sax Book", p.64. ISBN 0786602295.] . See dominant.

"Augmented seventh chord" may refer to the Hendrix chord [ [http://www.spectator.co.uk/the-magazine/arts/365466/shiver-down-the-backbone.thtml Radio: "Shiver down the backbone - Jimi Hendrix comes to Radio 3"] , "The Spectator", by Kate Chisholm, Wednesday, 21st November 2007] , which contains an augmented ninth but not an augmented fifth.

ee also

*Augmentation (music)

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