The F♯ 9♯11 chord is a six-note chord made up of F♯, G♯, A♯, B♯, C♯, and E.
Construction
F♯ 9♯11 = Root + Major 2nd + Major 3rd + Diminished 5th + Perfect 5th + Minor 7th = F♯ · G♯ · A♯ · B♯ · C♯ · E
| Note | Interval | Degree |
|---|---|---|
| F♯ | Root | 1 |
| G♯ | Major 2nd | 9 |
| A♯ | Major 3rd | 3 |
| B♯ | Diminished 5th | ♭5 |
| C♯ | Perfect 5th | 5 |
| E | Minor 7th | ♭7 |
Key Signature
A chord has no key signature of its own, but the F♯ 9♯11 is the tonic (I) chord of F# Major, whose key signature has 6 sharps (F♯, C♯, G♯, D♯, A♯, E♯).
F♯C♯G♯D♯A♯E♯
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♯ Major
These are the triads built on each degree of the F♯ major scale:
F♯ 9♯11 — Frequently Asked Questions
What is the F♯ 9♯11 chord on piano?
The F♯ 9♯11 chord contains the notes F♯ – G♯ – A♯ – B♯ – C♯ – E. On piano, play these notes together to sound the chord.