Irish bouzouki E♭7 chord (GDAE)E♭ seventh: 6 5 6 6, and 3 more shapes

Frets, low course to high: 6 5 6 6 (from the 5th fret) · Eb7/Db

1. G course: 6th fret, middle finger, D♭
2. D course: 5th fret, index finger, G
3. A course: 6th fret, ring finger (barre), E♭
4. E course: 6th fret, ring finger (barre), B♭

Sounds: D♭ G E♭ B♭  ·  E♭7 is E♭, G, B♭, D♭ (1 · 3 · 5 · ♭7)

Open courses that ring: G is a note of E♭7, so it can drone under it.

With a capo: on the 3rd fret it’s 3 2 3 3 (frets counted from the capo), an open C7 shape.

Tuning GDAE: G D A E, low to high. The octave mandolin uses the same tuning, so these shapes fit it too.