Bdim7 banjo chord

How to play Bdim7 on banjo

The most common way, the first shape above: your index finger on the F♯ string at the 2nd fret, your middle finger on the A string at the 2nd fret and your ring finger on the high D string at the 3rd fret. Let the low D string ring open. Don’t play the short F♯ string.

From the short F♯ string x 0 2 2 3 (x: not played, 0: open)

What notes are in Bdim7?

Bdim7, B diminished seventh, is B, D, F and A♭: the root (B), the minor third (D), the diminished fifth (F) and the diminished seventh (A♭). 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, B, D, F and A♭, so Bdim7 has the same notes as the diminished sevenths on D, F and A♭. Any of its notes can be the root.