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Abmaj9 chord (A flat major ninth) on piano

Abmaj9 (A flat major ninth) has five notes: A flat, C, E flat, G and B flat. Its formula is 1, 3, 5, 7, 9. In major keys, Abmaj9 is the Imaj9 chord in Ab major and the IVmaj9 in Eb major.

Abmaj9 inversions and fingering

CGAb
Shell (left hand)
Ab C G · LH 5-3-1
GCAbEbBb
Two hands
Ab G C Eb Bb · RH 1-2-5 · LH 5-1

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Abmaj9 chord facts
SymbolAbmaj9
Also writtenAbM9, AbΔ9
NotesAb C Eb G Bb
Formula1 3 5 7 9
Intervalsroot, major third, perfect fifth, major seventh, major second
TypeMajor ninth chord

Abmaj9 across the keyboard

C3C4C5C3G7C3G7C3Eb5Ab1Bb9Eb5Ab1Bb9

Piano, C3 to C5. Notes in this scale, low to high: C3 (3), Eb3 (5), G3 (7), Ab3 (1), Bb3 (9), C4 (3), Eb4 (5), G4 (7), Ab4 (1), Bb4 (9), C5 (3).

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Questions

What notes are in the Abmaj9 chord?

Abmaj9 (A flat major ninth) has five notes: A flat, C, E flat, G and B flat. Its formula is 1, 3, 5, 7, 9. Ab is the root, C is the major third, Eb is the perfect fifth, G is the major seventh and Bb is the major second.

How do you play Abmaj9 on piano?

Play Ab, C, Eb, G and Bb together. Shell (left hand): Ab C G · LH 5-3-1.

What key is Abmaj9 in?

In major keys, Abmaj9 is the Imaj9 chord in Ab major and the IVmaj9 in Eb major. It is diatonic to those keys, so it fits songs in any of them.

What is the difference between Abmaj9 and Abmaj7?

Abmaj9 is Abmaj7 (Ab, C, Eb and G) with Bb, the 9th, added.