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G#dim chord (G sharp diminished) on piano

G#dim (G sharp diminished) has three notes: G sharp, B and D. Its formula is 1, b3, b5. In major keys, G#dim is the vii° chord in A major.

G#dim inversions and fingering

BDG#
Root position
G# B D · RH 1-3-5 · LH 5-3-1
BDG#
First inversion
B D G# · RH 1-2-5 · LH 5-3-1
DBG#
Second inversion
D G# B · RH 1-3-5 · LH 5-2-1

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G#dim chord facts
SymbolG#dim
Also writtenG#°, G#o
NotesG# B D
Formula1 b3 b5
Intervalsroot, minor third, tritone
TypeDiminished chord

G#dim across the keyboard

C3C4C5Db5Bb3Db5Bb3G#1G#1

Piano, C3 to C5. Notes in this scale, low to high: D3 (flat 5), G#3 (1), B3 (flat 3), D4 (flat 5), G#4 (1), B4 (flat 3).

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Questions

What notes are in the G#dim chord?

G#dim (G sharp diminished) has three notes: G sharp, B and D. Its formula is 1, b3, b5. G# is the root, B is the minor third and D is the tritone.

How do you play G#dim on piano?

Play G#, B and D together. Root position: G# B D · RH 1-3-5 · LH 5-3-1.

What key is G#dim in?

In major keys, G#dim is the vii° chord in A major. It is diatonic to those keys, so it fits songs in any of them.

What is the difference between G#dim and G#m?

G#dim is G#m with its 5th lowered a half step, from D# to D. That flat 5th is what gives it its tense sound.