Cdim7
C Diminished 7th
1 ♭3 ♭5 ♭♭7
Notes in Cdim7
CR
E♭♭3
F♯♭5
A♭♭7
The Cdim7 chord contains 4 notes: C, E♭, F♯, A
Intervals
| Interval | Semitones | Note | Function |
|---|---|---|---|
| R | 0 | C | Root |
| ♭3 | 3 | E♭ | Minor 3rd |
| ♭5 | 6 | F♯ | Diminished 5th |
| ♭♭7 | 9 | A | Diminished 7th |
About C Diminished 7th Chords
Fully diminished 7th chords stack three minor 3rds, creating a symmetrical chord that divides the octave into four equal parts. This symmetry means every dim7 chord has four possible root names. They're essential in jazz, classical, and dramatic musical passages.
Compatible Scales & Modes
These scales contain all the notes of Cdim7 and can be used for soloing, improvising, and writing melodies over this chord.
Whole-Half Diminished Scale from C
The go-to scale for diminished 7th chords. Symmetric — repeats every minor 3rd.