Irish bouzouki A7 chord (GDAD)A seventh: 2 2 4 5, and 2 more shapes

Frets, low course to high: 2 2 4 5 (from the 2nd fret)

1. G course: 2nd fret, index finger (barre), A
2. Low D course: 2nd fret, index finger (barre), E
3. A course: 4th fret, ring finger, C♯
4. High D course: 5th fret, little finger, G

Sounds: A E C♯ G  ·  A7 is A, C♯, E, G (1 · 3 · 5 · ♭7)

Open courses that ring: G and A are notes of A7, so they can drone under it.

With a capo: on the 2nd fret it’s 0 0 2 3 (frets counted from the capo), an open G7 shape.

Tuning GDAD: G D A D, low to high.