A7♯5
Character: restless
- ARtriad
- C♯3triad
- E♯♯5triad
- G♭7add
7 ways to play A7♯5
Every voicing sits inside one of the five CAGED shapes, low to high on the neck, with its octave doublings in grey.
- Triad note
- Substitute
- Added
- Anchored root
- Bass
- Doubling
Frets x 12 11 10 8 xNotes A C♯ E♯ GIntervals 1 3 ♯5 ♭7Base triadA augmented, root position
The ♭7th gets a string of its own.
Frets x 10 11 10 10 xNotes G C♯ E♯ AIntervals ♭7 3 ♯5 1Base triadA augmented, 1st inversion
The ♭7th gets a string of its own.
Frets x 0 3 2 2 3Notes E♯ A C♯ GIntervals ♯5 1 3 ♭7Base triadA augmented, 2nd inversion
The ♭7th gets a string of its own.
Frets x 0 3 0 2 xNotes A E♯ G C♯Intervals 1 ♯5 ♭7 3Base triadA augmented, 2nd inversion
The root drops to the string below the triad. The ♭7th takes the root’s string.
Frets 3 4 3 2 x xNotes G C♯ E♯ AIntervals ♭7 3 ♯5 1Base triadA augmented, 1st inversion
The ♭7th gets a string of its own.
Frets x x 5 6 6 5Notes G C♯ E♯ AIntervals ♭7 3 ♯5 1Base triadA augmented, 1st inversion
The ♭7th gets a string of its own.
Frets 5 8 7 6 8 9Notes E♯ A C♯ GIntervals ♯5 1 3 ♭7Base triadA augmented, 2nd inversion
The ♭7th gets a string of its own.
The construction rules A7♯5 follows
Start from a triad
Root, 3rd and 5th, stacked in thirds. The 3rd makes it major or minor; the 5th makes it diminished or augmented when it moves.
A third on top makes a 7th chord
A major 7th over a major triad is maj7, a ♭7 is a dominant 7. Over minor you get m7 or m(maj7); over diminished, m7♭5 or the °7, whose 7th is lowered twice.
On guitar, something has to give
Each extension takes the string of a triad note that matters less, usually the 5th, or gets a string of its own. The root and 3rd stay: they say what the chord is.
The root can move down
When an extension needs the root’s string, the root can drop to the string below the triad: an anchored voicing keeps the bass and frees a string on top.
Alter a dominant for tension
Raise or lower the 5th or the 9th, or add a ♯11 or ♭13, and a dominant 7th pulls harder towards the next chord: G7♯9, G7♭9, G7♭13.
All the rules, with examples, in the guide to the chord library.
Dominant 7th ♯5 in every key
More chords on A
A7♯5 chord questions
What notes are in A7♯5?
A7♯5 is spelled A C♯ E♯ G: A is the root, C♯ is the 3rd, E♯ is the ♯5th, G is the ♭7th.
What is the formula of A7♯5?
1 3 ♯5 ♭7. It is a A augmented triad with the ♭7th stacked on top.
How many ways can you play A7♯5 on guitar?
This page shows 7 voicings of A7♯5, filed under the five CAGED shapes and named by inversion, from the open position up to the 16th fret.