Cdim/F# chord
C Diminished · 2nd Inversion · F# in the bass
Open position
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Notes
C
R
D#
+3
F#
bass
About Cdim/F#
Cdim/F# is C Diminished with F# as the lowest note. This is the 2nd inversion of the chord — the same notes as C Diminished (C, D#, F#), 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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