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D♭7♭9 Chord: Guitar, Piano and Notes

The D♭7♭9 chord is a altered dominant seventh chord built on the root note D♭. Its notes are D♭, F, A♭, C♭ and E𝄫. It's enharmonically the same chord as C♯7♭9.

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Quality
Short answer

Dominant seventh flat nine chords sound dark and urgent. Stacking a minor ninth on a dominant seventh tightens the tension already built into the tritone, which makes the chord a strong pull toward a minor tonic.

Notes
D♭ · F · A♭ · C♭ · E𝄫
Formula
1 · 3 · 5 · ♭7 · ♭9
Semitones
0 · 4 · 7 · 10 · 13
Note
D♭
Quality
Dominant 7♭9
Symbol
D♭7♭9

D♭7♭9 on piano

5 notes
View:
Piano diagram of the D♭7♭9 chord

Switch to the interactive diagram to hear the chord, change voicing and swap finger numbers for note names.

To play D♭7♭9 on piano, place your right hand with your thumb on D♭, index finger on F, middle finger on A♭, ring finger on C♭ and little finger on E𝄫. Press the keys together and listen for an even sound. On the keyboard D♭ and A♭ are black keys and F, C♭ and E𝄫 are white. C♭ and E𝄫 are the keys you'd normally call B and D. The thumb starts on a black key, so slide the whole hand a little further in, towards the fallboard. Practice moving in and out of the chord slowly, then bring in a metronome.

  • D♭1
  • F3
  • A♭5
  • C♭♭7
  • E𝄫♭9

D♭7♭9 on guitar

View:
Guitar chord diagram of the D♭7♭9 chord

Switch to the interactive diagram to hear the chord, change voicing and swap finger numbers for note names.

On guitar, D♭7♭9 is commonly played with the voicing shown above. The fretted notes sit between frets 1 and 4. Strings 4 and 2 ring open. Don't play string 6.

D♭ · F · A♭ · C♭ · E𝄫

Try D♭7♭9 on the virtual piano

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D♭7♭9 chord notes

Also known as C♯7♭9

DegreeIntervalSemitonesNoteHear
1Root0D♭(Db)
3Major third4F
5Perfect fifth7A♭(Ab)
♭7Minor seventh10C♭(Cb)
♭9Minor ninth13E𝄫(Ebb)

How to use the D♭7♭9 chord

The D♭7♭9 chord is built from a root, a major third, a perfect fifth, a minor seventh and a minor ninth. Start at the root D♭ and stack the intervals to get the whole chord: D♭, F, A♭, C♭ and E𝄫. The same formula gives you the chord in any other key.

Dominant seventh flat nine chords are the classic altered dominant of bebop and gospel, most often the V7 of a ii-V-i in a minor key. Gospel piano voices this chord thick under the vocal line right before it resolves.

How D♭7♭9 differs from similar chords

D♭7♭9 is D♭7 with a minor ninth, a half step above the root, where D♭9 has a major ninth. Leave out the root and the other four notes form a diminished seventh chord a major third up. That is why it pulls so hard towards a minor chord a fifth below.

Where D♭7♭9 is used

A dominant chord wants to resolve. Its home is the V of a major key - and the I of a blues, where the pull never lets up.

As the VG♭ major
  1. ii7A♭m7
  2. V7♭9D♭7♭9
  3. Imaj7G♭maj7

D♭7♭9 is the chord that wants to resolve, so ending the loop on it hands straight back to the top.

Questions people ask

What notes are in the D♭7♭9 chord?
The D♭7♭9 chord contains D♭, F, A♭, C♭ and E𝄫 (Db, F, Ab, Cb and Ebb in plain text).
Is the D♭7♭9 chord major or minor?
D♭7♭9 is a altered dominant seventh chord. Dominant seventh flat nine chords sound dark and urgent. Stacking a minor ninth on a dominant seventh tightens the tension already built into the tritone, which makes the chord a strong pull toward a minor tonic.
How do you play D♭7♭9 on piano?
Place your fingers on D♭, F, A♭, C♭ and E𝄫 and play them together. The root usually goes to the little finger of the left hand, the upper notes to the right. On the keyboard D♭ and A♭ are black keys and F, C♭ and E𝄫 are white. C♭ and E𝄫 are the keys you'd normally call B and D. The thumb starts on a black key, so slide the whole hand a little further in, towards the fallboard.
How do you play D♭7♭9 on guitar?
Use the fingering in the diagram above. The fretted notes sit between frets 1 and 4. Strings 4 and 2 ring open. Don't play string 6.
What is another name for the D♭7♭9 chord?
D♭7♭9 is enharmonically equivalent to C♯7♭9. Both chord names describe exactly the same notes, but the spelling depends on the key you are playing in.