Eb add11
The Eb add11 chord consists of the Eb (Perfect unison), G (Major third), Bb (Perfect fifth) and Ab (Perfect eleventh) notes.

How to play the Eb add11 chord
- Find Eb (Root) on the piano keyboard
- Add G (Major third) — 4 semitones above Eb
- Add Bb (Perfect fifth) — 7 semitones above Eb
- Add Ab (Perfect eleventh) — 17 semitones above Eb
- Press all 4 notes simultaneously to sound the Eb add11 chord