The F♯ Minor 6th chord is a four-note chord made up of F♯, A, C♯, and D♯. It is built from a root, minor third, perfect fifth, and major sixth.
Construction
| Note | Interval | Degree |
|---|---|---|
| F♯ | Root | 1 |
| A | Minor 3rd | ♭3 |
| C♯ | Perfect 5th | 5 |
| D♯ | Major 6th | 6 |
F♯ Minor 6th Inversions



| Position | Notes |
|---|---|
| Root Position | F♯ – A – C♯ – D♯ |
| 1st Inversion | A – C♯ – D♯ – F♯ |
| 2nd Inversion | C♯ – D♯ – F♯ – A |
| 3rd Inversion | D♯ – F♯ – A – C♯ |
Key Signature
A chord has no key signature of its own, but the F♯ Minor 6th is the tonic (i) chord of F# Minor, which shares the signature of its relative major, A Major — 3 sharps (F♯, C♯, G♯).
Order of sharps
Sharps are added to a key signature in a fixed order. Each new sharp key adds the next sharp on the list.
Mnemonic: Father Charles Goes Down And Ends Battle
Chords in the Key of F♯ Minor
These are the triads built on each degree of the F♯ minor scale:
Same Notes, Other Names
The notes F♯ – A – C♯ – D♯ aren’t exclusive to this chord. Depending on which note is the bass and how the chord functions, the same pitches also spell: