G#m9 Piano Chord

G#m9 is the G sharp minor ninth chord. It has five notes: G sharp, B, D sharp, F sharp and A sharp. Four of them are black keys, and the stack is wider than an octave, so most players split it between the hands.

G♯ at the bottom, then B, D♯, F♯ and A♯. Right hand 1-2-3-4-5 if the span allows; most players take G♯ in the left hand and the top four in the right.

How to play G#m9 on piano, step by step

Start on the G♯ below middle C. That is the lowest note of the chord.
Thumb (1): G♯
Index finger (2): B
Middle finger (3): D♯
Ring finger (4): F♯
Little finger (5): A♯
That reach is wider than an octave, so most players split it: play G♯ with the left hand and the other notes with the right. If you keep it in one hand, use the two-hand split shown on this page. Leaving out the fifth (D♯) can thin the sound, but it does not shorten the span from the root to the ninth.

The top four notes, B, D sharp, F sharp and A sharp, are exactly Bmaj7. Hold G sharp in the left hand, play a Bmaj7 shape with the right, and the chord is there with no stretch.

If it sounds wrong

The hand has nowhere white to rest: Four of the five notes are black, so play well into the keyboard. Only the B under the index sits back on a white key.
The reach is too wide: G sharp to A sharp is a ninth between two black keys. Split the chord, or omit the fifth (D sharp) only if another part supplies the root; play G sharp, B, F sharp and A sharp.
It sounds like a major chord: Without the root the top four notes are Bmaj7. The left hand G sharp is what makes the chord minor.

What makes it a G#m9

G♯ · B · D♯ · F♯ · A♯ 1 ♭3 5 ♭7 9

G#m9 is G#m7 with a ninth added: G sharp, B, D sharp and F sharp make the minor seventh, and the A sharp on top makes it a ninth. It is the ii chord of F sharp and a richer stand in for G sharp minor anywhere.

The upper four notes spell Bmaj7 on their own: left hand G sharp, right hand that shape, together G#m9. G sharp minor is the vi chord of B and the ii of F sharp, keys that pop and R and B reach constantly.

G#m9 vs G#m7

G#m9 adds an A sharp to the four notes of G#m7. The seventh is dark and smooth; the ninth sets one lighter note above all that black key colour.

The difference under the hand is one note a ninth above the root, which is why the ninth version usually means two hands where the seventh needed one.

G#m9 in major keys

Every note of G#m9 sits inside these keys. See how it works alongside the other chords in each one.

Questions about G#m9

Is G#m9 the same as Abm9?

Yes, one chord with two names. G sharp minor is the common spelling for this key, so it is the one used here.

Which notes are in a G#m9 chord on piano?

G sharp, B, D sharp, F sharp and A sharp. Only the B is a white key; the other four are black.

Why are there no inversions on this page?

This page teaches one practical root-position voicing because a ninth spans more than an octave. Ninth chords can still be inverted: an inversion changes the bass note, and players often reorder or omit notes to fit the hand. The diagrams here keep the beginner-friendly voicing visible.

Can I leave a note out?

Yes, the fifth. G sharp, B, F sharp and A sharp still sound fully like G#m9 and fit one hand.

Where is G#m9 used?

As the ii chord in F sharp, as the vi chord colour in B, and in place of plain G sharp minor across pop and R and B.

Chords to learn next

Other G# chords

G#m6