| I | III | IV | V |
| Root | Major third | Perfect fourth | Perfect fifth |
| Db | F | Gb | Ab |
The Db Add4 chord is composed of 4 notes :
These notes form a major chord with added fourth, creating rich tension without suspension.
The add4 chord Db Add4 combines the major triad with the added perfect fourth, without seventh.
The simultaneous presence of third and fourth creates a particular cluster, offering an alternative to sus4 with a more complete character.
The add4 chord has specific uses:
Progressive rock: complex and rich harmonies.
Modal jazz: exploits lydian mode colors.