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D7♭9 Chord: Guitar, Piano and Notes

The D7♭9 chord is a altered dominant seventh chord built on the root note D. Its notes are D, F♯, A, C and E♭.

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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
D7♭9

D7♭9 on piano

5 notes
View:
Piano diagram of the D7♭9 chord

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

To play D7♭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 F♯ and E♭ are black keys and D, A and C are white. Practice moving in and out of the chord slowly, then bring in a metronome.

  • D1
  • F♯3
  • A5
  • C♭7
  • E♭♭9

D7♭9 on guitar

View:
Guitar chord diagram of the D7♭9 chord

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

On guitar, D7♭9 is commonly played with the voicing shown above. This one is a barre at fret 4: keep the index finger flat across the strings and curve the others so they don't mute the strings next to them. Don't play string 6.

D · F♯ · A · C · E♭

Try D7♭9 on the virtual piano

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D7♭9 chord notes

DegreeIntervalSemitonesNoteHear
1Root0D
3Major third4F♯(F#)
5Perfect fifth7A
♭7Minor seventh10C
♭9Minor ninth13E♭(Eb)

How to use the D7♭9 chord

The D7♭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 D7♭9 differs from similar chords

D7♭9 is D7 with a minor ninth, a half step above the root, where D9 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 D7♭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. ii7Am7
  2. V7♭9D7♭9
  3. Imaj7Gmaj7

D7♭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 D7♭9 chord?
The D7♭9 chord contains D, F♯, A, C and E♭ (D, F#, A, C and Eb in plain text).
Is the D7♭9 chord major or minor?
D7♭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 D7♭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 F♯ and E♭ are black keys and D, A and C are white.
How do you play D7♭9 on guitar?
Use the fingering in the diagram above. This one is a barre at fret 4: keep the index finger flat across the strings and curve the others so they don't mute the strings next to them. Don't play string 6.
What chords work well with D7♭9?
D7♭9 pairs naturally with the chords in the related section: a perfect fifth up or down, the relative major or minor, and anything sharing two notes with it.