Db sus4/Ebb
The Db sus4 chord consists of the Db (Perfect unison), Gb (Perfect fourth) and Ab (Perfect fifth) notes, with Ebb as the bass note.

How to play the Db sus4/Ebb chord
- Play Ebb as the lowest bass note in the left hand
- Find Db (Root) on the piano keyboard
- Add Gb (Perfect fourth) — 5 semitones above Db
- Add Ab (Perfect fifth) — 7 semitones above Db
- Press all 4 notes simultaneously to sound the Db sus4/Ebb chord