The F♯ Minor Add 9 chord is a four-note chord made up of F♯, G♯, A, and C♯.
Construction
F♯ Minor Add 9 = Root + Major 2nd + Minor 3rd + Perfect 5th = F♯ · G♯ · A · C♯
| Note | Interval | Degree |
|---|---|---|
| F♯ | Root | 1 |
| G♯ | Major 2nd | 2 |
| A | Minor 3rd | ♭3 |
| C♯ | Perfect 5th | 5 |
Key Signature
A chord has no key signature of its own, but the F♯ Minor Add 9 is the tonic (i) chord of F# Minor, which shares the signature of its relative major, A Major — 3 sharps (F♯, C♯, G♯).
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.
F♯C♯G♯D♯A♯E♯B♯
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:
F♯ Minor Add 9 — Frequently Asked Questions
What is the F♯ Minor Add 9 chord on piano?
The F♯ Minor Add 9 chord contains the notes F♯ – G♯ – A – C♯. On piano, play these notes together to sound the chord.