Cdim7/A chord
C Dim 7 · 3rd Inversion · A in the bass
Fret 3 position
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Notes
C
R
D#
+3
F#
+6
A
bass
About Cdim7/A
Cdim7/A is C Dim 7 with A as the lowest note. This is the 3rd inversion of the chord — the same notes as C Dim 7 (C, D#, F#, A), but voiced so that A 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 3 position
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