Cdim9/F# chord
C Dim 9 · 2nd Inversion · F# in the bass
Open position
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Notes
C
R
D#
+3
F#
bass
A
+9
D
+2
About Cdim9/F#
Cdim9/F# is C Dim 9 with F# as the lowest note. This is the 2nd inversion of the chord — the same notes as C Dim 9 (C, D#, F#, A, D), but voiced so that F# 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
Open position
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