About the Eb7 chord
To play Eb dominant 7th, use the first shape above. Use your index finger to barre the 3rd fret across the G, C, and E strings. Place your middle finger on the 4th fret of the A string. Strum all four strings and check that each one rings cleanly.
Root
Eb
Quality
Dominant 7th
Notes
Eb · G · Bb · Db
How the Eb7 chord works
Eb
Root(1)
The home note. It gives the chord its name.
G
Major third(3)
The major-third interval that establishes the chord's major base.
Bb
Perfect fifth(5)
Adds strength and stability.
Db
Minor seventh(♭7)
Adds the defining minor-seventh color.