G#m7b5 chord (G sharp half-diminished seventh) on guitar
G#m7b5 (G sharp half-diminished seventh) has four notes: G sharp, B, D and F sharp. Its formula is 1, b3, b5, b7. In major keys, G#m7b5 is the viiø7 chord in A major.
G#m7b5 chord shapes
Finger 1 barres fret 2, then 3 on E, 4 on D, 4 on G, 2 on B.
Fingers: 4 on E, 2 on A, 1 on G, 3 on e.
Finger 1 barres fret 4, then 2 on A, 4 on B.
Finger 1 barres fret 4, then 2 on A, 4 on B, 4 on e.
Fingers: 1 on D, 2 on G, 3 on B, 4 on e.
Fingers: 3 on E, 1 on A, 4 on G, 2 on e.
Hear it and see every shape in ScaleSpace →
| Symbol | G#m7b5 |
|---|---|
| Also written | G#ø, G#ø7, G#min7b5, G#-7b5 |
| Notes | G# B D F# |
| Formula | 1 b3 b5 b7 |
| Intervals | root, minor third, tritone, minor seventh |
| Type | Half-diminished seventh chord |
G#m7b5 across the neck
Guitar · 6-string, tuned low to high: E, A, D, G, B, e. 24 frets.
- E string: fret 2 F# (flat 7), fret 4 G# (1), fret 7 B (flat 3), fret 10 D (flat 5), fret 14 F# (flat 7), fret 16 G# (1), fret 19 B (flat 3), fret 22 D (flat 5).
- A string: fret 2 B (flat 3), fret 5 D (flat 5), fret 9 F# (flat 7), fret 11 G# (1), fret 14 B (flat 3), fret 17 D (flat 5), fret 21 F# (flat 7), fret 23 G# (1).
- D string: fret 0 D (flat 5), fret 4 F# (flat 7), fret 6 G# (1), fret 9 B (flat 3), fret 12 D (flat 5), fret 16 F# (flat 7), fret 18 G# (1), fret 21 B (flat 3), fret 24 D (flat 5).
- G string: fret 1 G# (1), fret 4 B (flat 3), fret 7 D (flat 5), fret 11 F# (flat 7), fret 13 G# (1), fret 16 B (flat 3), fret 19 D (flat 5), fret 23 F# (flat 7).
- B string: fret 0 B (flat 3), fret 3 D (flat 5), fret 7 F# (flat 7), fret 9 G# (1), fret 12 B (flat 3), fret 15 D (flat 5), fret 19 F# (flat 7), fret 21 G# (1), fret 24 B (flat 3).
- e string: fret 2 F# (flat 7), fret 4 G# (1), fret 7 B (flat 3), fret 10 D (flat 5), fret 14 F# (flat 7), fret 16 G# (1), fret 19 B (flat 3), fret 22 D (flat 5).
Swipe the chart sideways to see all of it.
Questions
What notes are in the G#m7b5 chord?
G#m7b5 (G sharp half-diminished seventh) has four notes: G sharp, B, D and F sharp. Its formula is 1, b3, b5, b7. G# is the root, B is the minor third, D is the tritone and F# is the minor seventh.
How do you play G#m7b5 on guitar?
The easiest shape is 424432. Finger 1 barres fret 2, then 3 on E, 4 on D, 4 on G, 2 on B.
What key is G#m7b5 in?
In major keys, G#m7b5 is the viiø7 chord in A major. It is diatonic to those keys, so it fits songs in any of them.
What is the difference between G#m7b5 and G#dim7?
G#m7b5 and G#dim7 share G#, B and D. G#m7b5 has F#, the flat 7th, where G#dim7 has F, the double flat 7th.