The E-flat dominant seventh chord (abbreviated "Eb7 chord") is a four-note chord consisting of the notes E♭, G, B♭, and D♭. The chord is formed by adding a minor seventh to a E-flat major chord.
E-flat dominant seventh chord
E-flat major-minor seventh chord
E♭ G B♭ D♭
1 3 5 ♭7
tetrad (four-note chord)