F sharp ninth guitar chord (F#9)
Also written Gb9 (G flat ninth)
A ninth chord adds a ninth to the seventh chord. A rich, groovy sound, typical of funk, soul and blues.
Positions and fingerings
Position 1 fret 2
Position 2 fret 8
× muted string · o open string · numbers: fingers (1 index, 2 middle, 3 ring, 4 pinky)
Chord notes
| Note | Interval |
|---|---|
| F♯ (F sharp) | root |
| A♯ (A sharp) | major third |
| C♯ (C sharp) | perfect fifth |
| E | minor seventh |
| G♯ (G sharp) | major ninth |
Formula: 1 – 3 – 5 – b7 – 9 · F♯ – A♯ – C♯ – E – G♯
A progression with this chord
The basis of blues and funk: the ninth chord on the first degree, then on the fourth.