Gdim7 7-string guitar chord

How to play Gdim7 on 7-string guitar

The most common way, the first shape above: your little finger on the low E string at the 3rd fret, your index finger on the A string at the 1st fret, your middle finger on the D string at the 2nd fret and your ring finger on the high B string at the 2nd fret. Let the G and high E strings ring open. Don’t play the low B string.

From the low B string x 3 1 2 0 2 0 (x: not played, 0: open)

What notes are in Gdim7?

Gdim7, G diminished seventh, is G, B♭, D♭ and F♭: the root (G), the minor third (B♭), the diminished fifth (D♭) and the diminished seventh (F♭). Its formula is 1 ♭3 ♭5 ♭♭7.

Why do four diminished seventh chords have the same notes?

A diminished seventh is minor thirds stacked all the way round, G, B♭, D♭ and F♭, so Gdim7 has the same notes as the diminished sevenths on B♭, D♭ and F♭. Any of its notes can be the root.