Cdim7
Dim 7 · C – D♯ – F♯ – A
- CR
- D♯m3
- F♯♭5
- A6
Guitar voicings
Piano
- Root
- Third / sus
- Fifth
- Sixth / seventh
- Extension
About the Cdim7 chord
The Cdim7 chord (Dim 7) is built from C (the root), D♯ (a minor third), F♯ (a diminished fifth) and A (a major sixth). Diminished seventh chords are symmetrical and restless, handy for dramatic passing motion.