piano chord
E7sus4
E1A4B5D♭7
A dominant seventh with the fourth standing in for the third.
What is true of it
E7sus4 is E, A, B and D — 1, 4, 5 and b7 counted from E.
On an instrument that cannot reach all 4, the 5 goes first, in that order.
E in other shapes
C7sus4C♯7sus4D♭7sus4D7sus4D♯7sus4E♭7sus4F7sus4F♯7sus4all 374