The F 6/9 chord is a five-note chord made up of F, A, C, D, and G. It is built from a root, major third, perfect fifth, major sixth, and major ninth.
Construction
F 6/9 = Root + Major 3rd + Perfect 5th + Major 6th + Major 2nd = F · A · C · D · G
| Note | Interval | Degree |
|---|---|---|
| F | Root | 1 |
| A | Major 3rd | 3 |
| C | Perfect 5th | 5 |
| D | Major 6th | 6 |
| G | Major 2nd | 2 |
Key Signature
A chord has no key signature of its own, but the F 6/9 is the tonic (I) chord of F Major, whose key signature has 1 flat (B♭).
B♭
Order of flats
Flats are added in a fixed order — the reverse of the sharp order. Each new flat key adds the next flat on the list.
B♭E♭A♭D♭G♭C♭F♭
Mnemonic: Battle Ends And Down Goes Charles’ Father
Chords in the Key of F Major
These are the triads built on each degree of the F major scale:
Same Notes, Other Names
The notes F – A – C – D – G aren’t exclusive to this chord. Depending on which note is the bass and how the chord functions, the same pitches also spell:
F 6/9 — Frequently Asked Questions
What is the F 6/9 chord on piano?
The F 6/9 chord contains the notes F – A – C – D – G. On piano, play these notes together to sound the chord.
What notes are in the F 6/9 chord?
The F 6/9 chord (F6/9) contains 5 notes: F, A, C, D, G. Formula: R-M3-P5-M6-M9.
How is F6/9 used in music?
F6/9 is used in jazz, fusion, and contemporary music to add harmonic color. It appears as a dominant or tonic chord depending on context.
What is the scale degree formula for F6/9?
F6/9 uses scale degrees 1-3-5-6-9, giving it its distinctive sound.