Aaug7 guitar chord
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About Aaug7 — 3rd inversion
Aaug7 is A, C#, E# and G. Start with and raise the 5th from to . You’ll also see this chord written A7♯5 or A7(♯5).
Hear that one-note change by comparing with Aaug7.
Hear the change
Only the 5th changes: E rises a half step to E♯. The other notes stay in place.
When Aaug7 resolves to , that can rise another half step to .
Also written A7#5, A+7 or A7(#5).
What 3rd inversion means
Aaug7 in 3rd inversion puts G in the bass instead of A, the 7th of the chord. The notes are the same; what changes is what the bass line does, which is most of why you would reach for it — it lets the lowest voice move by step where the root would have jumped.
3 of Aaug7’s 14 shapes do this:3x322xxx5665x-10-11-10-10-x
How to use Aaug7
Aaug7 is a dominant with its tension raised, so it still points at — harder than a plain seventh does. A plain dominant has two voices a semitone from home; an altered one has four, because every altered tone is also sitting a semitone from a note of D. More voices leaning the same way is all "more tension" means here.
In a phrase:→→
The ii–V–I of D.
Voice by voice, Aaug7 → . 3 voices move by a semitone, and one note is common to both chords. Every voice that moves at all moves by a semitone — the shortest distance there is, which is why the change sounds settled rather than sudden.
| In Aaug7 | Moves | In D |
|---|---|---|
| A, the root | stays where it is | A, the fifth |
| C#, the major third | rises a semitone | D, the root |
| E#, the sharp fifth | rises a semitone | F#, the major third |
| G, the flat seventh | falls a semitone | F#, the major third |
What to play over Aaug7
Useful scales
- +BD#
Contains Aaug7 and adds ninth and flat fifth.
- +BbB#D#
Contains Aaug7 and adds flat ninth, sharp ninth and flat fifth.
Chords near Aaug7
Change one note
open strings open strings 2nd inversion 2nd inversion 3rd inversion 3rd inversion 2nd inversion open strings 3rd inversion
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The common shapes and the derived voicings come from different places, and both are explained in how this site is built.