Dim & aug familyvii°7 in C♯ harmonic minor
C diminished seventh chord
Cdim7C diminished seventh
Piano root position
- Root
- ♭3
- ♭5
- 𝄫7
Guitar standard tuning
Fret 2
No barre: each note has its own finger.
Finger: 1 index, 2 middle, 3 ring, 4 little
Notation treble clef
Intervals
12 semitones- C1
- ♭2
- 2
- E♭♭3
- 3
- 4
- G♭♭5
- 5
- ♯5
- B𝄫𝄫7
- ♭7
- 7
- C Root
- E♭ Minor 3rd
- G♭ Diminished 5th
- B𝄫 Diminished 7th
About this chord
What is a C diminished seventh chord?
Cdim7 is built from 4 notes: C (the root), E♭ (the ♭3), G♭ (the ♭5), B𝄫 (the 𝄫7). Symmetrical stacked minor thirds: dramatic, silent-film suspense.
- Notes
- C · E♭ · G♭ · B𝄫
- Formula
- 1 · ♭3 · ♭5 · 𝄫7
- Also written
- C°7 · Co7
- Found in
- vii°7 in C♯ harmonic minor
Neighbours
Chords close to Cdim7
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