A Minor 9th
Am9
Notes
A · C · E · G · B
Intervals
- RootA (1P)
- Minor 3rdC (3m)
- Perfect 5thE (5P)
- Minor 7thG (7m)
- Major 9thB (9M)
Fretboard
Adjust labels, frets, and palette in the interactive view.
Voicings & shapes
Rootless voicings (A / B form) (4)
About
The Am9 minor ninth (A–C–E–G–B) extends a minor 7 with a ninth. The B sits above the G and adds an expressive, singing quality. The essential tones are the C (minor identity), G (seventh extension), and B (defining color); the 5th can be dropped to keep voicings clear. m9 chords appear frequently in jazz, neo-soul, and ambient styles as tonic or pre-dominant harmony — for example as ii in a major ii–V–I (Am9 → D9 → GMaj9). Compared to Am7, the added 9th gives more emotional dimension without increasing tension.
Chord diagrams
A Minor 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 Dorian (I)
- A Natural Minor (I)
- B Locrian (VII)
- B Phrygian (VII)
- C Lydian (VI)
- C Major (VI)
- D Dorian (V)
- D Mixolydian (V)
- E Harmonic Minor (IV)
- E Natural Minor (IV)
- E Phrygian (IV)
- F Lydian (III)
- F♯ Locrian (III)
- G Major (II)
- G Mixolydian (II)
Scales whose notes include every chord tone. The Roman numeral (or scale degree) marks the chord root’s position in the scale.