Db9(#11) Guitar Chord Diagrams | Db Dominant Ninth Sharp Eleventh Added
Six notes spell Db9(#11) (Db ninth sharp eleven): Db, F, Ab, Cb, Eb and G, a dominant seventh with a ninth and a sharp eleventh.
Cb is the flat seventh, written Cb rather than B to keep the letters in a stack of thirds. Open C#9(#11) for the same chord under its other spelling. The Db Lydian Dominant scale includes all six chord tones and adds one more, the sixth.
Its sharp eleventh, G, sits a tritone above the root Db, while the ninth, Eb, sits a whole step above it. Together they are the two extensions that set the chord apart.
Db 9th with sharp 11th guitar chord is also written as Db9(#11), Db9#11 or Db9+11.
Notes that compose the Db 9(#11) chord:
Chord formula for the Dominant Ninth Sharp Eleventh Added chord:
Formula: 1 3 5 b7 9 #11
Db 9(#11) Chord Interactive Fretboard
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Created by
Giancarlo is a musician (teaching guitar since 2000), software engineer, AI consultant and published researcher
FAQ
What are the notes of Db9(#11)?
Db9(#11) is spelled Db, F, Ab, Cb, Eb and G. It stacks a major third, perfect fifth, minor seventh, ninth and sharp eleventh over Db.
Why does Db9(#11) use Cb as its seventh?
The minor seventh is a whole step under the octave. Counting seven letters up from D gives C, and Cb lies 10 semitones from Db, so Cb is the correct name.
Is Db9(#11) the same chord as C#9(#11)?
Yes, they are enharmonic. C#9(#11) spells the same pitches C#, E#, G#, B, D# and F##, so Db9(#11) is the simpler way to write it.
Which scale suits Db9(#11)?
Use the Db Lydian Dominant scale: Db, Eb, F, G, Ab, Bb and Cb. It contains all six chord tones, plus Bb as an extra.
