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Gdim chord (G diminished) on piano

Gdim (G diminished) has three notes: G, B flat and D flat. Its formula is 1, b3, b5. In major keys, Gdim is the vii° chord in Ab major.

Gdim inversions and fingering

GBbDb
Root position
G Bb Db · RH 1-3-5 · LH 5-3-1
GBbDb
First inversion
Bb Db G · RH 1-2-5 · LH 5-3-1
GDbBb
Second inversion
Db G Bb · RH 1-3-5 · LH 5-2-1

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Gdim chord facts
SymbolGdim
Also writtenG°, Go
NotesG Bb Db
Formula1 b3 b5
Intervalsroot, minor third, tritone
TypeDiminished chord

Gdim across the keyboard

C3C4C5G1G1Dbb5Bbb3Dbb5Bbb3

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

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Questions

What notes are in the Gdim chord?

Gdim (G diminished) has three notes: G, B flat and D flat. Its formula is 1, b3, b5. G is the root, Bb is the minor third and Db is the tritone.

How do you play Gdim on piano?

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

What key is Gdim in?

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

What is the difference between Gdim and Gm?

Gdim is Gm with its 5th lowered a half step, from D to Db. That flat 5th is what gives it its tense sound.