Db Dominant 9th

Db9

Notes

Db · F · Ab · Cb · Eb

Intervals

  • RootDb (1P)
  • Major 3rdF (3M)
  • Perfect 5thAb (5P)
  • Minor 7thCb (7m)
  • Major 9thEb (9M)

Fretboard

EBGDAE357912FAbBDbEbBDbEbFAbBAbBDbEbFEbFAbBDbBDbEbFAbFAbBDbEb

On the fretboard, B represents Cb.

About

The D♭9 dominant ninth (D♭–F–A♭–C♭–E♭) extends a dominant 7 with a ninth. The E♭ adds brightness and harmonic richness without affecting the chord’s dominant function — the tritone between F and C♭ is still present and still drives resolution to G♭. The 3rd and ♭7 remain essential; the 5th is routinely dropped on guitar to make room for the 9th without creating a muddy cluster. Common in funk, jazz, and blues as a more colorful version of the dominant 7. Compared to D♭7, the 9th adds shimmer and modernity; the resolution tendency is identical.

Open in visualizer →

Adjust labels, frets, and palette in the interactive view.