B add11
The B add11 chord consists of the B (Perfect unison), D# (Major third), F# (Perfect fifth) and E (Perfect eleventh) notes.

How to play the B add11 chord
- Find B (Root) on the piano keyboard
- Add D# (Major third) — 4 semitones above B
- Add F# (Perfect fifth) — 7 semitones above B
- Add E (Perfect eleventh) — 17 semitones above B
- Press all 4 notes simultaneously to sound the B add11 chord