D# Dominant Ninth Sharp Fifth Guitar Chord Charts & Variations
Written D#9#5, the D# ninth sharp five chord is made of D#, F##, A##, C# and E#. The ninth sits a whole step above the root, an octave higher, and adds a bright top note to the dominant core.
D#9#5 fits inside the D# whole-tone scale: each of its notes is a member of that scale. F##, A## and E# make this spelling a theoretical one, and Eb9#5 is the spelling charts prefer. The ninth and the raised fifth, E# and A##, are a tritone apart. It sounds identical to Eb9#5, the same pitches written with the other spelling.
D# 9th with sharp 5th guitar chord is also written as D#9(#5), D#9#5, D#9+5 or D#aug9.
Notes in the D# 9(#5) chord:
Tones of the Dominant Ninth Sharp Fifth chord:
Formula: 1 3 #5 b7 9
D# 9(#5) Chord Interactive Fretboard
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Giancarlo is a musician (teaching guitar since 2000), software engineer, AI consultant and published researcher
FAQ
What notes make up D#9#5?
D#9#5 is spelled D#, F##, A##, C# and E#. Those are the root, major third, raised fifth, minor seventh and ninth. The double sharps come from raising the third and the fifth of a sharp root.
Is D#9#5 the same chord as Eb9#5?
Yes, they sound the same. Eb9#5 is spelled Eb, G, B, Db and F, which is far easier to read. D#9#5 is the theoretical spelling of that sound.
Why does D# ninth sharp five need F## and A##?
The major third up from D# is F##, and the perfect fifth is A#, so the raised fifth becomes A##. Changing the letter names to F and A would break the interval spelling even though the sound is the same.
Which scale covers D#9#5?
The D# Whole-Tone Scale (D#, E#, F##, G##, A##, C#) contains all five chord tones. Both the ninth E# and the minor seventh C# are members of it.
