| Component intervals from root | ||
| minor seventh | ||
| augmented fifth | ||
| major third | ||
| root | ||
The augmented seventh chord 
Play (help·info), or seventh augmented fifth chord[1], 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 seventh[2]. It may be notated with the chord symbols C+7 or Caug7[2].
The root is the only optional note in an augmented seventh chord, the fifth being required because it is raised[3]. The augmented seventh chord normally resolves to the chord a perfect fourth above, thus C7+5 resolves to an F major chord, for example[4]. See dominant.
Augmented seventh chord may refer to the Hendrix chord[5], which contains an augmented ninth but not an augmented fifth.
See also
Sources
- ^ 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.
- ^ a b Garner, Robert (2007). Mel Bay presents Essential Music Theory for Electric Bass, p.69. ISBN 0786677368.
- ^ Latarski, Don (1991). An Introduction to Chord Theory, p.29. ISBN 0769209556.
- ^ Bay, William (1994). Mel Bay Complete Jazz Sax Book, p.64. ISBN 0786602295.
- ^ Radio: "Shiver down the backbone - Jimi Hendrix comes to Radio 3", The Spectator, by Kate Chisholm, Wednesday, 21st November 2007
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