F♯6/9
F# Six-Nine — the sixth and ninth together — a plush, settled ending chord that never feels heavy.
The keys
F♯ – A♯ – C♯ – D♯ – G♯
What's inside F♯6/9
| Note | Interval from root | Degree |
|---|---|---|
| F♯ | Root | 1 |
| A♯ | Major 3rd | 3 |
| C♯ | Perfect 5th | 5 |
| D♯ | Major 6th | 6 |
| G♯ | Major 9th | 9 |
A working voicing
Split the chord between two hands the way working players do — a solid shell low down, the colour tones up top:
| Hand | Keys |
|---|---|
| Left (shell) | G♭2 – D♭3 |
| Right (colour) | B♭4 – E♭5 – A♭5 |
Where F♯6/9 lives
As the I chord
F♯6/9 → B → D♭ → F♯6/9
The classic I–IV–V–I motion with this chord as home.
In a ii–V–I
A♭m7 → D♭7 → F♯6/9
The strongest cadence in harmony, resolving onto this chord.
Put F♯6/9 under your fingers
Hear every voicing, see the keys light up, and drill it in the interactive Chord & Voicing Lab.
Open the Chord & Voicing Lab →