Dominant seventh sharp five chords (7#5) | Guitar diagrams and voicings
What's a dominant 7#5 chord ?
A dominant seventh sharp five chord is also known as "seventh augmented fifth chord" or "augmented seventh chord". As its name implies, it consists of a dominant seventh chord with an augmented fifth instead of a perfect fifth. It can also be viewed as an augmented triad with a minor seventh. Chord tones are root (1), major third (3), augmented fifth (#5) and minor seventh (b7). Dominant 7#5 chords produce a dissonant and unstable sound. They can be used to add tension in your playing.
Symbols and notations
Seventh augmented fifth chords can be written +7, aug7, 7+5, 7#5.
7#5 guitar chords | Drop 2 voicings with diagrams
Here are the 7#5 drop 2 voicings related to the 12 guitar chord shapes below.
What are drop 2 chords ?
Drop 2 chords are surely the most used voicings by jazz guitarist (The term "voicings" refers to the order of notes in a chord). They are built by dropping the second highest note of a four-notes close chord to the bass. 7#5 close chord formula is 1-3-#5-7 that gives the following drop 2 chord formula #5-1-3-7.
What is an inverted chord ?
It means that the notes of a chord are inverted, there can be a third, a fifth or a seventh in the bass.
|1st inversion (third in the bass)||3||b7||R||#5|
|2nd inversion (augmented fifth in the bass)||#5||R||3||b7|
|3rd inversion (minor seventh in the bass)||b7||3||#5||R|
Drop 2 dominant 7#5 guitar chords built from the E-string
Root position - 7#5 chord - Root in the bass - Bass on E-string.
1st inversion - 7#5 chord - Third in the bass - Bass on E-string.
2nd inversion - 7#5 chord - augmented fifth in the bass - Bass on E-string.
3rd inversion - 7#5 chord - minor seventh in the bass - Bass on E-string.
Drop 2 dominant 7#5 guitar chords built from the A-string
Root position - 7#5 chord - Root in the bass - Bass on A-string.
1st inversion - 7#5 chord - Third in the bass - Bass on A-string.
2nd inversion - 7#5 chord - augmented fifth in the bass - Bass on A-string.
3rd inversion - 7#5 chord - minor seventh in the bass - Bass on A-string
Drop 2 dominant 7#5 guitar chords built from the D-string
Root position - 7#5 chord - Root in the bass - Bass on D-string.
1st inversion - 7#5 chord - Third in the bass - Bass on D-string.
2nd inversion - 7#5 chord - augmented fifth in the bass - Bass on D-string.
3rd inversion - 7#5 chord - minor seventh in the bass - Bass on D-string
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Last edited: 02/01/2018