A♭ Minor 7th Chord (Abm7, G#m7) on Piano
The Abm7 chord (Ab minor 7th) is built from 4 notes: Ab – Cb – Eb – Gb. It is also written as G#m7.
Play these notes on a MIDI keyboard, your computer keyboard, or the on-screen keys and ChordKeys will name the chord back to you.
Notes and intervals
| Note | Degree | Interval from Ab | Semitones |
|---|---|---|---|
| Ab | 1 | root | 0 |
| Cb | b3 | minor 3rd | 3 |
| Eb | 5 | perfect 5th | 7 |
| Gb | b7 | minor 7th | 10 |
Inversions
Rearranging which note sits at the bottom gives you 4 playable voicings of the same chord. Inversions let you move between chords with less hand movement.
| Voicing | Notes | Bass note |
|---|---|---|
| Root position | Ab – Cb – Eb – Gb | Ab in the bass |
| 1st inversion | Cb – Eb – Gb – Ab | Cb in the bass |
| 2nd inversion | Eb – Gb – Ab – Cb | Eb in the bass |
| 3rd inversion | Gb – Ab – Cb – Eb | Gb in the bass |
How the minor 7th chord is built
Every minor 7th chord uses the same interval formula: 1 (0 semitones), b3 (3 semitones), 5 (7 semitones), b7 (10 semitones). Starting on Ab and applying that formula produces Ab, Cb, Eb, Gb. Learn the formula once and you can build a minor 7th chord on any of the twelve roots.
Keys that contain Abm7
Every note of Abm7 belongs to these keys, so it will sit naturally in a progression written in any of them.
Other chords on Ab
Minor 7th chords on other roots
Frequently asked questions
What notes are in a Abm7 chord?
A Abm7 chord contains the notes Ab, Cb, Eb, Gb. Those are the 1, b3, 5, b7 degrees measured from the root note Ab.
How do you play Abm7 on piano?
Place your thumb on Ab, then add Cb and Eb and Gb above it. With a right hand in root position the common fingering is 1–2–3–5.
Is Abm7 the same as G#m7?
Yes. Abm7 and G#m7 are enharmonic equivalents — they sound identical and use the same piano keys. Which spelling you use depends on the key you are playing in.