Bb add13/Eb
The Bb add13 chord consists of the Bb (Perfect unison), D (Major third), F (Perfect fifth) and G (Major thirteenth) notes, with Eb as the bass note.

How to play the Bb add13/Eb chord
- Play Eb as the lowest bass note in the left hand
- Find Bb (Root) on the piano keyboard
- Add D (Major third) — 4 semitones above Bb
- Add F (Perfect fifth) — 7 semitones above Bb
- Add G (Major thirteenth) — 21 semitones above Bb
- Press all 5 notes simultaneously to sound the Bb add13/Eb chord