Abmaj9 Piano Chord

Abmaj9 is the A flat major ninth chord. It has five notes: A flat, C, E flat, G and B flat. It spans more than an octave, so most players put A flat in the left hand and the other four notes in the right.

A flat at the bottom, then C, E flat, G and B flat. Split it if the span is too wide: the left hand takes A flat and the right hand takes the other four notes.

How to play Abmaj9 on piano, step by step

Start on the A♭ below middle C. That is the lowest note of the chord.
Thumb (1): A♭
Index finger (2): C
Middle finger (3): E♭
Ring finger (4): G
Little finger (5): B♭
That reach is wider than an octave, so most players split it: play A♭ with the left hand and the other notes with the right. If you keep it in one hand, leave out the fifth (E♭), the note the chord misses least.

The thumb starts on a black key, which pushes the hand deeper into the keyboard. That is normal for flat keys; let the fingers sit well inside the keys rather than pulling back to the white key edges.

If it sounds wrong

The thumb keeps slipping off A flat: Play closer to the fallboard so the thumb rests fully on the black key. Flat key chords sit deeper in the keyboard than white key ones.
The stretch is too wide: Split it: A flat in the left hand, C, E flat, G and B flat in the right. Almost nobody plays a ninth chord in one hand.
It sounds restless instead of calm: Check the G. Abmaj9 needs G natural, the white key a half step below the octave A flat. G flat turns it into Ab9, a pushier chord.

What makes it an Abmaj9

A♭ · C · E♭ · G · B♭ 1 3 5 7 9

Abmaj9 is Abmaj7 with a ninth added: A flat, C, E flat and G make the major seventh chord, and the B flat on top makes it a ninth. Three black keys and two white ones, with the G a half step below the octave giving the chord its glow.

It is the I chord of A flat major at its softest. A flat is a singer's key and a soul key, so this chord turns up in ballads and R&B far more often than its guitar cousin does.

Abmaj9 vs Abmaj7

Abmaj9 is Abmaj7 with a B flat added on top. The seventh chord is already soft; the ninth opens it up and makes it sound arranged rather than struck.

In the hand the difference is one note and a much wider reach. Abmaj7 fits comfortably; Abmaj9 spans a ninth, which is why it is usually shared between two hands.

Questions about Abmaj9

Is Abmaj9 the same as G#maj9?

Yes, one chord with two names. A flat is the spelling the keys this chord lives in actually use, so it is the one printed here.

Which notes are in an Abmaj9 chord on piano?

A flat, C, E flat, G and B flat. A flat, E flat and B flat are black keys; C and G are white.

What is the difference between Abmaj9 and Ab9?

Ab9 has G flat, the flat seventh, and pushes toward D flat. Abmaj9 has G natural and rests. They are one key apart and opposite in mood.

Why are there no inversions on this page?

Because the chord is wider than an octave, lifting the bottom note an octave drops it inside the chord instead of on top. Pianists rearrange ninths as rootless voicings instead, which is a topic past this page.

Do I have to play all five notes?

No. Drop E flat, the fifth, and nothing important is lost. Left hand on A flat with C, G and B flat in the right is a classic voicing.