Also written Fmadd9, Fm add9 or F
F minor add 9 contains the notes F, A♭, C, and G. The default voicing uses an open G string, creating a resonant, ringing quality.
The same three notes, with a different one in the bass.
F minor add 9 is built from the formula 1, ♭3, 5, 9. The major 2nd between F and G adds the ninth, while the minor 3rd between F and A♭ establishes the minor quality. Compare F minor add 9 to F minor, which omits the ninth.
F minor add 9 functions as the vi chord in A♭ major progressions like A♭–E♭–F minor–D♭, the I–V–vi–IV. It suits soulful ballads and jazz, adding a lush extension to F minor.
The open position keeps the root F in the bass for a full, grounded sound. The A♭ inversion places the third in the bass, creating a darker, more introspective quality.
F minor add 9 is played in open position as 0 5 4 3: ring finger on the C string at fret 5, middle finger on the E string at fret 4 and index finger on the A string at fret 3. The G string rings open.
Tip — The stretch between the index finger on the A string and the ring finger on the C string requires flexible fingers.
| String | Fret | Finger | Note |
|---|---|---|---|
| 4 (G) | open | — | G (9) |
| 3 (C) | 5 | 3 | F (1) |
| 2 (E) | 4 | 2 | A♭ (♭3) |
| 1 (A) | 3 | 1 | C (5) |
F minor add 9 is played at the 8th fret as 10 8 8 10: ring finger on the G string at fret 10, index finger on the C string at fret 8, middle finger on the E string at fret 8 and pinky finger on the A string at fret 10.
| String | Fret | Finger | Note |
|---|---|---|---|
| 4 (G) | 10 | 3 | F (1) |
| 3 (C) | 8 | 1 | A♭ (♭3) |
| 2 (E) | 8 | 2 | C (5) |
| 1 (A) | 10 | 4 | G (9) |
F minor add 9 includes the ninth but omits the seventh. F minor 9 includes both the seventh and the ninth, giving it a more complex, jazzy sound.
The open G string adds a natural resonance that emphasizes the major 2nd between F and G. This creates a rich, full sound characteristic of the chord.
Yes, the default voicing uses an open G string. The open string adds resonance and makes the chord easier to play for beginners.