Chord reference · five-note chord
Gm9 chord (G minor ninth)
The Gm9 chord contains 5 written tones: G, B♭, D, F, A. Its interval formula is 1–♭3–5–♭7–9.
Gm9 chord notes and interval formula
The formula 1–♭3–5–♭7–9 means the chord is measured from G using the root, minor third, perfect fifth, minor seventh, and major ninth. In semitone numbers from the root, the pattern is 0–3–7–10–14. On a real instrument, it is normal to omit a less important tone—usually the fifth—when the full closed position is too dense.
| Degree | Interval | Semitones | Note |
|---|---|---|---|
| 1 | Root | 0 | G |
| ♭3 | Minor Third | 3 | B♭ |
| 5 | Perfect Fifth | 7 | D |
| ♭7 | Minor Seventh | 10 | F |
| 9 | Major Ninth | 14 | A |
How to play Gm9 on piano
Start with the notes in root position from low to high: G – B♭ – D – F – A. Use 1–2–3–4–5 or split the voicing between both hands is a useful starting point, but black-key combinations and melodic movement may make another fingering more comfortable.
For a cleaner accompaniment, place the root in the left hand and play the remaining tones in the right. With extended chords, keep the third and seventh because they identify the chord quality most clearly.
How to play Gm9 on guitar
Try the shape 3-0-0-0-6-6 in standard tuning, read from low E to high E. The sounding-string details are: E fret 3: G; A open: A; D open: D; G open: G; B fret 6: F; E fret 6: B♭. Keep every note clear and release pressure from strings marked “x.”
This is one voicing, not the only correct shape. The chord remains Gm9 whenever the essential pitch classes are present; doubling, omission, and bass-note choice change the voicing rather than the basic chord name.
Gm9 inversions and slash chords
Inversions keep the same notes but place a different chord tone in the bass. They are useful for smoother bass lines, compact keyboard movement, and alternative guitar voicings.
| Position | Symbol | Notes low to high | Bass |
|---|---|---|---|
| Root position | Gm9 | G – B♭ – D – F – A | G |
| 1st inversion | Gm9/Bb | B♭ – D – F – A – G | B♭ |
| 2nd inversion | Gm9/D | D – F – A – G – B♭ | D |
| 3rd inversion | Gm9/F | F – A – G – B♭ – D | F |
What Gm9 sounds like and where it fits
The G minor ninth chord is rich and spacious. Minor ninth chords extend a minor seventh chord with the ninth. Guitar and piano voicings often omit the fifth so the root, minor third, flat seventh, and ninth remain clear.
Gm9 compared with similar chords
Small interval changes create different chord names. Use this table to avoid confusing Gm9 with nearby structures.
| Chord | Quality | Formula | Notes |
|---|---|---|---|
| Gm7 | Minor Seventh | 1–♭3–5–♭7 | G, B♭, D, F |
| G9 | Dominant Ninth | 1–3–5–♭7–9 | G, B, D, F, A |
| Gm11 | Minor Eleventh | 1–♭3–5–♭7–9–11 | G, B♭, D, F, A, C |
Frequently asked questions
What notes are in the Gm9 chord?
The Gm9 chord contains G, B♭, D, F, A. Its interval formula is 1–♭3–5–♭7–9.
How do you play Gm9 on piano?
Play G, B♭, D, F, A together. A practical root-position fingering is use 1–2–3–4–5 or split the voicing between both hands; adjust the fingering to your hand and musical context.
How do you play Gm9 on guitar?
One compact standard-tuning shape is 3-0-0-0-6-6 from the low E string to the high E string. An “x” means mute that string.
What does the symbol Gm9 mean?
The root is G. The suffix m9 identifies a minor ninth structure with the formula 1–♭3–5–♭7–9.
How many inversions does Gm9 have?
A 5-note chord has 5 closed-position arrangements when every chord tone is retained: root position plus 4 inversions. Extended practical voicings may omit notes.