Skip to content

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.

Transpose
Quality
Short answer

Dominant seventh sharp nine chords sound gritty and bluesy at once, the clash of a major third against a sharp ninth that reads to the ear like a minor third. Funk, rock and soul horn sections lean hard on this one chord.

Notes
D♭ · F · A♭ · C♭ · E
Formula
1 · 3 · 5 · ♭7 · ♯9
Semitones
0 · 4 · 7 · 10 · 15
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♭ is the key you'd normally call B. 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 2 and 1 ring open. Don't play string 6.

D♭ · F · A♭ · C♭ · E

Try D♭7♯9 on the virtual piano

Free, in your browser: play with the mouse, your computer keyboard or a USB MIDI keyboard. No sign-up.

Open the piano

D♭7♯9 chord notes

Also known as C♯7♯9

DegreeIntervalSemitonesNoteHear
1Root0D♭(Db)
3Major third4F
5Perfect fifth7A♭(Ab)
♭7Minor seventh10C♭(Cb)
♯9Augmented ninth15E

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 an augmented 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 sharp nine chords drive funk, blues-rock and fusion as the tonic of a dominant-based vamp, not only as a V chord. Whole grooves in soul and rock guitar are built around this one chord.

How D♭7♯9 differs from similar chords

D♭7♯9 holds both a major third and a raised ninth that sounds like a minor third, so it is major and minor at once. That clash separates it from D♭7♭9, where the ninth is lowered, and from D♭9, where it is natural. Guitarists often call it the Hendrix chord.

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 E in plain text).
Is the D♭7♯9 chord major or minor?
D♭7♯9 is a altered dominant seventh chord. Dominant seventh sharp nine chords sound gritty and bluesy at once, the clash of a major third against a sharp ninth that reads to the ear like a minor third. Funk, rock and soul horn sections lean hard on this one chord.
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♭ is the key you'd normally call B. 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 2 and 1 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.