Adim7 6-string bass chord

How to play Adim7 on 6-string bass

The most common way, the first shape above: your middle finger on the E string at the 5th fret, your little finger on the A string at the 6th fret, your index finger on the D string at the 4th fret and your ring finger on the G string at the 5th fret. Don’t play the B and C strings.

From the B string x 5 6 4 5 x (x: not played, 0: open)

What notes are in Adim7?

Adim7, A diminished seventh, is A, C, E♭ and G♭: the root (A), the minor third (C), the diminished fifth (E♭) and the diminished seventh (G♭). 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, A, C, E♭ and G♭, so Adim7 has the same notes as the diminished sevenths on C, E♭ and G♭. Any of its notes can be the root.