About the Aaug Baritone chord
Play Aaug on Baritone ukulele with the 3 2 2 1 shape in DGBE tuning.
Place your index finger on the 1st fret of the E string, your middle finger on the 2nd fret of the G string, your ring finger on the 2nd fret of the B string, and your pinky finger on the 3rd fret of the D string. Strum all four 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
A
Quality
Augmented
Notes
A · C# · E#
How the Aaug chord works
Root (1)
The home note. It gives the chord its name.
Major third (3)
The major-third interval that establishes the chord's major base.
Augmented fifth (♯5)
A raised fifth that expands the triad.