Amaj9 guitar chord
The standard grips this chord is usually shown with.
- Tap a note to hear it
- Arrows change position
- Fingers, notes or intervals
- Play the chord
About Amaj9 — 2nd inversion
Amaj9 is A, C#, E, G# and B — Amaj7 with the ninth stacked above it.
It sounds a maj7 with more air in it. The ninth argues with nothing here, so it works anywhere a maj7 does.
Tonic — an extended resting chord.
Amaj9 notes and formula
| A | C# | E | G# | B |
|---|---|---|---|---|
| 1 | 3 | 5 | 7 | 9 |
Also written AM9, AΔ9, Ama9 or A major 9. The same chord either way; which spelling you meet depends on who wrote the chart.
How to play Amaj9
Amaj9 in 2nd inversion puts E in the bass instead of A, the 5th of the chord. The notes are the same; what changes is what the bass line does, which is most of why you would reach for it — it lets the lowest voice move by step where the root would have jumped.
2 of Amaj9’s 14 common shapes do this:xx242412-12-11-13-12-x
Play Amaj9 as a shell — root, third and seventh — and the spare string takes the #11 (D#) or the 13 (F#).
All 14 common shapes as fret numbers, lowest string first. Hover or tap one to see it drawn.
- x02424, open position, A, root position, top note G#, 1 open string
- x22224, 2nd fret, B, 9th in the bass, top note G#, barred
- xx2424, 2nd fret, E, 2nd inversion, top note G#, all fretted
- 522224, 2nd fret, A, root position, top note G#, barred
- 546450, open position, A, root position, top note E, 1 open string
- 546454, 4th fret, A, root position, top note G#, barred
- x06657, 5th fret, A, root position, top note B, 1 open string
- 576657, 5th fret, A, root position, top note B, all fretted
- xx6657, 5th fret, G#, 3rd inversion, top note B, all fretted
- xx7697, 6th fret, A, root position, top note B, all fretted
- 977997, 7th fret, C#, 1st inversion, top note B, barred
- x-12-9-9-9-9, 9th fret, A, root position, top note C#, barred
- x-12-11-13-12-x, 11th fret, A, root position, top note B, all fretted
- 12-12-11-13-12-x, 11th fret, E, 2nd inversion, top note B, barred
How to use Amaj9
How you get to it. The turn that lands on Amaj9 is Bm7 to E7 — the ii and the V of A — and E7 shares its third and seventh with Bm7, so the hand barely moves between them.
In which keys. Every note of Amaj9 belongs to C# minor (the ♭VI), E major (the IV, the subdominant), F# minor (the ♭III) and A major (the I, the tonic).
What to play over Amaj9
Every note of Amaj9 is in A major and A lydian.
Chords near Amaj9
Change one note of Amaj9 and you have Amaj7 (drop the ninth), Amaj11 (add the eleventh), Amaj13 (add the thirteenth), AmMaj9 (the major third becomes the minor third), Aadd9 (drop the major seventh) or A69 (the major seventh becomes the sixth).
Amaj9 is a major chord — root, major third, fifth. Major chords on every root.
The common shapes and the derived voicings come from different places, and both are explained in how this site is built.