E11 is a dominant eleventh chord made of 6 notes: E, G♯, B, D, F♯, A. It sounds thick and open, and you hear it in soul, funk and fusion, often played without the third. It is the V chord of A major and turns up in 2 other keys.
The library above opens on E11 with 14 shapes up and down the neck. Tap a shape to hear it, or play it one string at a time.