F9
F Dominant 9th — a dominant seventh widened with the ninth — fuller, funkier movement toward the resolution.
The keys
F – A – C – E♭ – G
What's inside F9
| Note | Interval from root | Degree |
|---|---|---|
| F | Root | 1 |
| A | Major 3rd | 3 |
| C | Perfect 5th | 5 |
| E♭ | Minor 7th | b7 |
| 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) | F2 – E♭3 |
| Right (colour) | A4 – G5 |
Where F9 lives
As the I chord
F9 → B♭ → C → F9
The classic I–IV–V–I motion with this chord as home.
In a ii–V–I
Gm7 → C7 → F9
The strongest cadence in harmony, resolving onto this chord.
Put F9 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 →