A 6th Added 9th
A6add9
Notes
A · C♯ · E · F♯ · B
Intervals
- RootA (1P)
- Major 3rdC♯ (3M)
- Perfect 5thE (5P)
- Major 6thF♯ (6M)
- Major 9thB (9M)
Fretboard
Adjust labels, frets, and palette in the interactive view.
Voicings & shapes
6/9 voicings (2)
About
The A6/9 (A–C♯–E–F♯–B) combines the warmth of the 6th with the openness of the 9th, deliberately omitting the 7th. This keeps the chord stable and resolved — unlike extensions that include a 7th, it does not imply harmonic motion. It is a rich tonic color used in jazz, R&B, and gospel as a final or resting chord. Both the F♯ and B are essential to the sound; the 5th can be omitted in compact voicings. On guitar, spread voicings that separate the 6 and 9 allow both extensions to speak clearly without muddiness. Compared to AMaj9, the 6/9 is warmer and more grounded; compared to Aadd9, fuller.
Chord diagrams
A 6th Added 9th voicing charts — tap a sheet to open it full size to save or print.
Similar chords
Chords sharing two or more notes with this one, ranked by overlap.
Scales containing this chord
- A Lydian (I)
- A Major (I)
- A Major Pentatonic (deg 1)
- A Mixolydian (I)
- A♭ Locrian (II)
- A♭ Phrygian (II)
- B Dorian (VII)
- B Mixolydian (VII)
- B Natural Minor (VII)
- D Lydian (V)
- D Major (V)
- D♭ Locrian (VI)
- D♭ Natural Minor (VI)
- D♭ Phrygian (VI)
- E Dorian (IV)
- E Major (IV)
- E Melodic Minor (IV)
- E Mixolydian (IV)
- E♭ Locrian (V)
- F♯ Blues (deg 2)
- F♯ Dorian (III)
- F♯ Minor Pentatonic (deg 2)
- F♯ Natural Minor (III)
- F♯ Phrygian (III)
- G Lydian (II)
Scales whose notes include every chord tone. The Roman numeral (or scale degree) marks the chord root’s position in the scale.