C diminished 7 chord (Cdim7) on guitar and piano

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C diminished 7
The C diminished 7 chord (Cdim7) is made of the notes C, Eb, Gb and A. It is built from the root C with a minor third, a diminished fifth and a diminished seventh.
The diminished 7 chord is symmetrical and very tense: it works as a passing chord in jazz and classical music.

C diminished 7

Notes: C – Eb – Gb – A
Guitar — positions on the neck
Cdim78123141Cdim7××101213
Piano — root position and inversions
Cdim7C1235C Eb Gb ACdim7CC1235Eb Gb A CCdim7C1235Gb A C EbCdim7C1235A C Eb Gb

Fingerings and positions

On guitar, this chord can be played in 2 ways along the neck. It is most often played with a barre. Example fingering (from the low E string to the high E string, x = muted string): 8 9 10 8 10 8. On piano, the right hand plays 4 notes, in root position or in an inversion.

Notes and intervals

Note
Interval
C
root
Eb
minor third
Gb
diminished fifth
A
diminished seventh

Neighbouring chords

Try it in the app

Hear the chords, play them as a progression, switch instrument, note names (Do Ré Mi or C D E) and theme:

Frequently asked questions

What are the notes of the C diminished 7 chord?

The notes of the C diminished 7 chord (Cdim7) are C, Eb, Gb and A.

How do you play the C diminished 7 chord on guitar?

On guitar, this chord can be played in 2 ways along the neck. It is most often played with a barre. Example fingering (from the low E string to the high E string, x = muted string): 8 9 10 8 10 8.

How is the C diminished 7 chord built?

The C diminished 7 chord (Cdim7) is made of the notes C, Eb, Gb and A. It is built from the root C with a minor third, a diminished fifth and a diminished seventh.