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Gm7b5 chord (G half-diminished seventh) on piano

Gm7b5 (G half-diminished seventh) has four notes: G, B flat, D flat and F. Its formula is 1, b3, b5, b7. In major keys, Gm7b5 is the viiø7 chord in Ab major.

Gm7b5 inversions and fingering

GFBbDb
Root position
G Bb Db F · RH 1-2-3-5 · LH 5-3-2-1
FGBbDb
First inversion
Bb Db F G · RH 1-2-4-5 · LH 5-3-2-1
FGDbBb
Second inversion
Db F G Bb · RH 1-2-3-5 · LH 5-3-2-1
FGBbDb
Third inversion
F G Bb Db · RH 1-2-3-5 · LH 5-4-2-1
GFBb
Shell (left hand)
G Bb F · LH 5-3-1

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Gm7b5 chord facts
SymbolGm7b5
Also writtenGø, Gø7, Gmin7b5, G-7b5
NotesG Bb Db F
Formula1 b3 b5 b7
Intervalsroot, minor third, tritone, minor seventh
TypeHalf-diminished seventh chord

Gm7b5 across the keyboard

C3C4C5Fb7G1Fb7G1Dbb5Bbb3Dbb5Bbb3

Piano, C3 to C5. Notes in this scale, low to high: Db3 (flat 5), F3 (flat 7), G3 (1), Bb3 (flat 3), Db4 (flat 5), F4 (flat 7), G4 (1), Bb4 (flat 3).

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Questions

What notes are in the Gm7b5 chord?

Gm7b5 (G half-diminished seventh) has four notes: G, B flat, D flat and F. Its formula is 1, b3, b5, b7. G is the root, Bb is the minor third, Db is the tritone and F is the minor seventh.

How do you play Gm7b5 on piano?

Play G, Bb, Db and F together. Root position: G Bb Db F · RH 1-2-3-5 · LH 5-3-2-1.

What key is Gm7b5 in?

In major keys, Gm7b5 is the viiø7 chord in Ab major. It is diatonic to those keys, so it fits songs in any of them.

What is the difference between Gm7b5 and Gdim7?

Gm7b5 and Gdim7 share G, Bb and Db. Gm7b5 has F, the flat 7th, where Gdim7 has Fb, the double flat 7th.