G Minor 7th
m7
0 - 3 - 7 - 10Minor + minor 7th
About G Minor 7th
G minor seventh is a barre chord that pays for itself. Its notes — G, B♭, D, F — include a flat the guitar does not have open, so there is no shortcut; but the shape is movable, and learning it at the third fret gives every minor seventh on the neck.
The notes
G, B♭, D, F. The B♭ is the minor third, the F the seventh. Together they make a chord that is stable rather than tense: minor sevenths do not demand resolution the way dominant sevenths do.
The same notes read from B♭ give B♭6 — the same equivalence that links Cm7 with E♭6. Arrangers use it to change the apparent chord by moving only the bass.
Positions
Third fret with the low E root, or tenth with the root on the A string. The first is the standard, the second is where the chord goes when a solo is happening below it.
A three-string voicing on the top strings is common in funk, where the full chord would be too heavy for a rhythm part played on the offbeat.
Where it shows up
As the ii of F major and the vi of B♭. In jazz that ii role is its main job: Gm7–C7–Fmaj7 is the cadence in F, one of the keys the repertoire uses most.
It also appears in modal writing as a tonic that stays put — a vamp on Gm7 has no built-in reason to move, which is exactly why it can carry a long solo.
For a guitarist the quickest route into the chord is the E minor shape barred at the third fret with one finger lifted — the same economy that makes Em7 free in open position, moved up the neck and paid for with a barre.