About the Am7 Baritone chord
Play Am7 on Baritone ukulele with the 2 2 1 3 shape in DGBE tuning.
Place your index finger on the 1st fret of the B string, your middle finger on the 2nd fret of the D string, your ring finger on the 2nd fret of the G string, and your pinky finger on the 3rd fret of the E 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
Minor 7th
Notes
A · C · E · G
How the Am7 chord works
Root (1)
The home note. It gives the chord its name.
Minor third (♭3)
The defining minor interval above the root.
Perfect fifth (5)
Adds strength and stability.
Minor seventh (♭7)
Adds the defining minor-seventh color.