About the Gdim Baritone chord
Play Gdim on Baritone ukulele with the x 3 2 3 shape in DGBE tuning.
Place your index finger on the 2nd fret of the B string, your middle finger on the 3rd fret of the G string, and your ring finger on the 3rd fret of the E string. Mute the D string. Strum the other three strings and check that each one rings cleanly.
Read the frets across D, G, B and E. A 0 means open and x means mute. These fingerings are for Baritone strings. A Standard gCEA chart uses different shapes for the same chord names.
Root
G
Quality
Diminished
Notes
G · Bb · Db
How the Gdim chord works
G
Root (1)
The home note. It gives the chord its name.
Bb
Minor third (♭3)
The defining minor interval above the root.
Db
Diminished fifth (♭5)
A lowered fifth that adds harmonic tension.