Emaj9 is a major ninth chord made of 5 notes: E, G♯, B, D♯, F♯. It sounds rich and floating, and you hear it in jazz, R&B and cinematic pop. It is the I chord of E major and turns up in 3 other keys.
The library above opens on Emaj9 with 14 shapes up and down the neck. Tap a shape to hear it, or play it one string at a time.