D# 9th chord

D#9 chord (also called Dominant 9th chord) for piano presented by keyboard diagrams.
Explanation: The D# ninth is a five-note chord. Due to practical circumstances, however, the fifth (A#) is often omitted and/or the chord is played inverted. The chord is often abbreviated as D#9.
Omissions: D#9(no3): D# - A# - C# - F; D#9(no5): D# - G - C# - F.
Theory: The D# ninth chord is constructed with a root, a major third, a perfect fifth, a minor seventh and a major ninth.

D#9

D#9 chord diagram
Notes: D# - G - A# - C# - F / D# - F## - A# - C# - E#

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D#9 inverted

D#9 chord diagram
One of many possible inversions (D#9/C#)

D#9 chord diagram
Notes: D# - A# (left hand) C# - F - G (right hand)
Two-hand voicing

D# chord categories

D# D#m D#7 D#m7 D#maj7 D#mM7 D#6 D#m6 D#6/9 D#5 D#9 D#m9 D#maj9 D#11 D#m11 D#maj11 D#13 D#m13 D#maj13 D#add D#7-5 D#7+5 D#sus D#dim D#dim7 D#m7b5 D#aug D#aug7