Guitar chords in the key of G:
Chord G7-9 (3rd fret) notes: G, F, B, D and Ab. You should not play the 5th string.
This chord is played by placing a barre on fret three with your index finger.
G7-9 (G dominant 7th flat 9th) guitar chord's alternative names: G7b9, Gdom7b9, Gdom7-9.
1(G), 3(B), 5(D), b7(F), b9(G#/Ab).