The A♯ Augmented 7th chord is a four-note chord made up of A♯, C♯♯, E♯♯, and G♯. It is built from a root, major third, augmented fifth, and minor seventh.
Construction
A♯ Augmented 7th = Root + Major 3rd + Minor 6th + Minor 7th = A♯ · C♯♯ · E♯♯ · G♯
| Note | Interval | Degree |
|---|---|---|
| A♯ | Root | 1 |
| C♯♯ | Major 3rd | 3 |
| E♯♯ | Minor 6th | ♯5 |
| G♯ | Minor 7th | ♭7 |
A♯ Augmented 7th Inversions
| Position | Notes |
|---|---|
| Root Position | A♯ – C♯♯ – E♯♯ – G♯ |
| 1st Inversion | C♯♯ – E♯♯ – G♯ – A♯ |
| 2nd Inversion | E♯♯ – G♯ – A♯ – C♯♯ |
| 3rd Inversion | G♯ – A♯ – C♯♯ – E♯♯ |
Key Signature
A Augmented 7th chord is built from symmetrical or ambiguous intervals, so it doesn’t belong to a single key and has no key signature of its own.
Same Notes, Other Names
The notes A♯ – C♯♯ – E♯♯ – G♯ aren’t exclusive to this chord. Depending on which note is the bass and how the chord functions, the same pitches also spell:
A♯ Augmented 7th — Frequently Asked Questions
What is the A♯ Augmented 7th chord on piano?
The A♯ Augmented 7th chord contains the notes A♯ – C♯♯ – E♯♯ – G♯. On piano, play these notes together to sound the chord.
What notes are in the A# Augmented 7th chord?
A# Augmented 7th is built from the A# root. Check the interactive keyboard above for exact notes and fingering.
How is the A# Augmented 7th chord used in music?
A# Augmented 7th appears in jazz, pop, and classical contexts. Its sound depends on the chord quality (Augmented 7th).
What is the fingering for A# Augmented 7th?
See the fingering chart above. Right hand typically uses thumb on root. Left hand uses pinky on root.
What are the inversions of A# Augmented 7th?
Use the inversion buttons above to see each inversion with notes, fingering, and staff notation.