Augmented seventh chord

augmented seventh chord
Component intervals from root
minor seventh
augmented fifth
major third
root
Tuning
80:100:125:144
Forte no. / Complement
4-24 / 8-24

The augmented seventh chord, or seventh augmented fifth chord, or seventh sharp five chord is a seventh chord composed of a root, major third, augmented fifth, and minor seventh (1, 3, 5, 7). It can be viewed as an augmented triad with a minor seventh. When using popular-music symbols, it is denoted by +7, aug7, or 75. For example, the augmented seventh chord built on C, written as C+7, has pitches C–E–G–B:


{
\override Score.TimeSignature #'stencil = ##f
\relative c' {
   \clef treble 
   \time 4/4
   \key c \major
   <c e gis bes>1
} }

The chord can be represented by the integer notation {0, 4, 8, 10}.

Use

The root is the only optional note in an augmented seventh chord, the fifth being required because it is raised. This alteration is useful in the major mode because the raised 5th creates a leading tone to the 3rd of the tonic triad. See also dominant.

In rock parlance, the term augmented seventh chord is sometimes confusingly and erroneously used to refer to the so-called "Hendrix chord", a 79 chord which contains the interval of an augmented ninth but not an augmented fifth.


{
\override Score.TimeSignature #'stencil = ##f
\relative c' { 
  \clef treble 
  \time 6/4 c4^\markup { "C whole tone scale" } d e fis gis ais \time 4/4 c1 \bar "||"
  \time 4/4 <c, e gis bes>1 \bar "||"
} }
One chord-scale option for an augmented dominant seventh chord (+7th) is the whole tone scale.

The augmented minor seventh chord may be considered an altered dominant seventh and may use the whole tone scale, as may the dominant seventh flat five chord. See chord scale system.

The augmented seventh chord normally resolves to the chord a perfect fifth below. Thus, Gaug7 resolves to a C major chord, for example.


{
\override Score.TimeSignature #'stencil = ##f
\relative c' {
   \clef treble 
   \time 4/4
   \key c \major
   <b dis f g>1 <c e e g> \bar "||"
} }

Augmented seventh chord table

Chord Root Major third Augmented fifth Minor seventh
Caug7 C E G B
Caug7 C E (F) Gdouble sharp (A) B
Daug7 D F A C (B)
Daug7 D F A C
Daug7 D Fdouble sharp (G) Adouble sharp (B) C
Eaug7 E G B D
Eaug7 E G B (C) D
Faug7 F A C E
Faug7 F A Cdouble sharp (D) E
Gaug7 G B D F (E)
Gaug7 G B D F
Gaug7 G B (C) Ddouble sharp (E) F
Aaug7 A C E G
Aaug7 A C E (F) G
Aaug7 A Cdouble sharp (D) Edouble sharp (F) G
Baug7 B D F A
Baug7 B D Fdouble sharp (G) A

See also

Sources

  1. ^ 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 0-87166-579-4.
  2. ^ a b Garner, Robert (2007). Mel Bay presents Essential Music Theory for Electric Bass, p.69. ISBN 0-7866-7736-8.
  3. ^ a b "The Dominant with a Raised 5th", Kostka, Stefan, and Dorothy Payne. 2004. Tonal Harmony with an Introduction to Twentieth-Century Music. 6th Ed. pp. 446-447. New York. ISBN 978-0-07-332713-6.
  4. ^ Latarski, Don (1991). An Introduction to Chord Theory, p.29. ISBN 0-7692-0955-6.
  5. ^ Radio: "Shiver down the backbone – Jimi Hendrix comes to Radio 3", The Spectator, by Kate Chisholm, Wednesday, 21 November 2007
  6. ^ Hatfield, Ken (2005). Jazz and the Classical Guitar Theory and Applications, p.121. ISBN 0-7866-7236-6.
  7. ^ Berle, Annie (1996). Contemporary Theory And Harmony, p.100. ISBN 0-8256-1499-6.
  8. ^ Bay, William (1994). Mel Bay Complete Jazz Sax Book, p.64. ISBN 0-7866-0229-5.

This page was last updated at 2021-10-25 01:14 UTC. Update now. View original page.

All our content comes from Wikipedia and under the Creative Commons Attribution-ShareAlike License.


Top

If mathematical, chemical, physical and other formulas are not displayed correctly on this page, please useFirefox or Safari