E maj7
The E maj7 chord consists of the E (Perfect unison), G# (Major third), B (Perfect fifth) and D# (Major seventh) notes.

How to play the E maj7 chord
- Find E (Root) on the piano keyboard
- Add G# (Major third) — 4 semitones above E
- Add B (Perfect fifth) — 7 semitones above E
- Add D# (Major seventh) — 11 semitones above E
- Press all 4 notes simultaneously to sound the E maj7 chord