Master the A# 7(#5) Guitar Chord with Interactive Practice
The A# augmented seventh chord is usually written A#7#5 and uses the notes A#, C##, E## and G#. A#7#5 fits inside the A# whole-tone scale: each of its notes is a member of that scale.
Jazz musicians treat the raised fifth as one of the standard alterations of a dominant chord. Spelling it correctly takes C## and E##, which is why the same sound is also written Bb7#5. The listed voicings run from fret 1 up to fret 12. Seen from the other side, Bb7#5 names the same sound with the opposite accidentals.
Start the drum loop in the practice tool at the top, choose a tempo and repeat the chord until it lands on the beat.
A# dominant 7th with sharp 5th guitar chord is also written as A#7(#5), A#7#5, A#7+5 or A#aug7.
Notes of the A# 7(#5) chord:
Chord structure of the Dominant Seventh Sharp Fifth chord:
Formula: 1 3 #5 b7
A# 7(#5) Chord Interactive Fretboard
Want a structured chord roadmap instead of jumping between pages?
Go to the full guitar chords tutorial.
A# 7(#5) Guitar Chord Diagrams
Position 1 Barre Movable
Finger Positions
- Mute the low E string
- Place your index finger (1) on the fret 1 of the A and G strings at the same time
- Place your middle finger (2) on the fret 2 of the high E string
- Place your ring finger (3) on the fret 3 of the B string
- Place your pinky finger (4) on the fret 4 of the D string
Position 2 Barre Movable
Finger Positions
- Mute the A string
- Place your index finger (1) on the fret 6 of the low E, D and high E strings at the same time
- Place your middle finger (2) on the fret 7 of the G string
- Place your ring finger (3) on the fret 7 of the B string
Position 3 Barre Movable
Finger Positions
- Mute the low E string
- Mute the high E string
- Place your index finger (1) on the fret 11 of the A, G and B strings at the same time
- Place your middle finger (2) on the fret 12 of the D string
Find more shapes in our all guitar chords online library. If you
prefer a printable pdf, download
the Free Guitar Chords Chart Pdf
Created by
Giancarlo is a musician (teaching guitar since 2000), software engineer, AI consultant and published researcher
FAQ
What notes are in the A#7#5 chord?
A#7#5 is spelled A#, C##, E## and G#. Those are the root, a major third, a raised fifth and a minor seventh. C## sounds like D and E## sounds like F#.
Is A#7#5 the same chord as Bb7#5?
Yes. A#7#5 and Bb7#5 share the same pitches, so they sound identical. Bb7#5 is spelled Bb, D, F# and Ab, which avoids the double sharps.
Why does A# augmented seventh need C## and E##?
Chord letters run A, C, E, G. The major third of A# is C##, and the raised fifth is E##. Naming them D and F# would give the same sound but the wrong letters.
Which scale contains A#7#5?
The A# whole-tone scale, A#, B#, C##, D##, E##, G#, holds all four chord tones. That makes it a natural choice for melodies over the chord.
How many ways are there to play A#7#5?
There are 3 voicings, and all 3 use a barre. None uses an open string. They span from fret 1 up to fret 12.
