The F♯ Augmented 7th chord is a four-note chord made up of F♯, A♯, C♯♯, and E. It is built from a root, major third, augmented fifth, and minor seventh.
Construction
F♯ Augmented 7th = Root + Major 3rd + Minor 6th + Minor 7th = F♯ · A♯ · C♯♯ · E
| Note | Interval | Degree |
|---|---|---|
| F♯ | Root | 1 |
| A♯ | Major 3rd | 3 |
| C♯♯ | Minor 6th | ♯5 |
| E | Minor 7th | ♭7 |
F♯ Augmented 7th Inversions
| Position | Notes |
|---|---|
| Root Position | F♯ – A♯ – C♯♯ – E |
| 1st Inversion | A♯ – C♯♯ – E – F♯ |
| 2nd Inversion | C♯♯ – E – F♯ – A♯ |
| 3rd Inversion | E – F♯ – A♯ – C♯♯ |
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 F♯ – A♯ – C♯♯ – E aren’t exclusive to this chord. Depending on which note is the bass and how the chord functions, the same pitches also spell:
F♯ Augmented 7th — Frequently Asked Questions
What is the F♯ Augmented 7th chord on piano?
The F♯ Augmented 7th chord contains the notes F♯ – A♯ – C♯♯ – E. On piano, play these notes together to sound the chord.
What notes are in the F# Augmented 7th chord?
F# Augmented 7th is built from the F# root. Check the interactive keyboard above for exact notes and fingering.
How is the F# Augmented 7th chord used in music?
F# Augmented 7th appears in jazz, pop, and classical contexts. Its sound depends on the chord quality (Augmented 7th).
What is the fingering for F# 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 F# Augmented 7th?
Use the inversion buttons above to see each inversion with notes, fingering, and staff notation.