Amaj9 chord (A major ninth) on piano
Amaj9 (A major ninth) has five notes: A, C sharp, E, G sharp and B. Its formula is 1, 3, 5, 7, 9. In major keys, Amaj9 is the Imaj9 chord in A major and the IVmaj9 in E major.
Amaj9 inversions and fingering
A C# G# · LH 5-3-1
A G# C# E B · RH 1-2-5 · LH 5-1
Hear it and see every shape in ScaleSpace →
| Symbol | Amaj9 |
|---|---|
| Also written | AM9, AΔ9 |
| Notes | A C# E G# B |
| Formula | 1 3 5 7 9 |
| Intervals | root, major third, perfect fifth, major seventh, major second |
| Type | Major ninth chord |
Amaj9 across the keyboard
Piano, C3 to C5. Notes in this scale, low to high: C#3 (3), E3 (5), G#3 (7), A3 (1), B3 (9), C#4 (3), E4 (5), G#4 (7), A4 (1), B4 (9).
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Questions
What notes are in the Amaj9 chord?
Amaj9 (A major ninth) has five notes: A, C sharp, E, G sharp and B. Its formula is 1, 3, 5, 7, 9. A is the root, C# is the major third, E is the perfect fifth, G# is the major seventh and B is the major second.
How do you play Amaj9 on piano?
Play A, C#, E, G# and B together. Shell (left hand): A C# G# · LH 5-3-1.
What key is Amaj9 in?
In major keys, Amaj9 is the Imaj9 chord in A major and the IVmaj9 in E major. It is diatonic to those keys, so it fits songs in any of them.
What is the difference between Amaj9 and Amaj7?
Amaj9 is Amaj7 (A, C#, E and G#) with B, the 9th, added.