C#9b13/D# chord
C# 9 b13 · Inversion · D# in the bass
Fret 9 position
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Notes
C#
R
F
+4
G#
+7
B
+10
D#
bass
A
+8
About C#9b13/D#
C#9b13/D# is C# 9 b13 with D# as the lowest note. This is the inversion of the chord — the same notes as C# 9 b13 (C#, F, G#, B, D#, A), but voiced so that D# sits in the bass. Slash chords create a smoother bass line movement and are common in chord progressions where the bass walks stepwise.
Other inversions
Fret 9 position
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