Eb maj9
The Eb maj9 chord consists of the Eb (Perfect unison), G (Major third), Bb (Perfect fifth), D (Major seventh) and F (Major ninth) notes.

How to play the Eb maj9 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 D (Major seventh) — 11 semitones above Eb
- Add F (Major ninth) — 14 semitones above Eb
- Press all 5 notes simultaneously to sound the Eb maj9 chord