Banjo Edim chord (Double C)E diminished on the 5-string banjo: 4 3 4 5, and 2 more shapes

Frets, string 4 to string 1: 4 3 4 5 (from the 3rd fret)

1. String 4 (C): 4th fret, middle finger, E
2. String 3 (G): 3rd fret, index finger, B♭
3. String 2 (C): 4th fret, ring finger, E
4. String 1 (D): 5th fret, little finger, G
5. String 5, the short g: open, G, in the chord

Sounds: E B♭ E G  ·  Edim is E, G, B♭ (1 · ♭3 · ♭5)

Found in: C mixolydian (iii°), G dorian (vi°), D minor (ii°), F major (vii°)

The 5th string: the short g is the minor 3rd of Edim, so let it ring.

With a capo: on the 4th fret it’s 0 5 3 4 (frets counted from the capo), an open Cdim shape. Spike the 5th string at the 9th fret to keep it in tune with the capo.

Double C tuning: gCGCD, the short 5th string first, then strings 4 to 1.