Finger Positions

Root Note C

Name C diminished seventh over E

Intervals 1P-3m-5d-7d

Relative Minor Am

Notes E, C, Eb, Gb, A

Aliases Cdim7, C°7, Co7

How to play the Cdim7/E Chord

The Cdim7/E is a fundamental dominant chord in guitar music. To play this chord correctly, ensure your fingers are placed precisely on the frets indicated in the diagram above.

Music Theory Analysis

From a theoretical perspective, the C diminished seventh over E is built using the 1P, 3m, 5d, 7d intervals. In the key of C Major, this chord functions as the I chord.

Common Progressions

In music composition, the Cdim7/E chord is often used to create tension or resolution.

I-V-vi-IV

C → G → Am → F

vi-IV-I-V

Am → F → C → G

The Diatonic Family

Understanding the "family" of chords that belong to C helps with transposition and ear training.

Triads

C Dm Em F G Am Bdim

7ths

Cmaj7 Dm7 Em7 Fmaj7 G7 Am7 Bm7b5

Scale Compatibility

View All Scales

Diminished Ultralocrian Locrian 6 Dorian #4 Lydian Diminished Hungarian Major Lydian #9 Half-Whole Diminished Composite Blues Messiaen's Mode #7 Chromatic

* 11 scales found containing the notes E, C, Eb, Gb, A.

Acoustic & Digital Analysis

Digital footprint of the Cdim7/E chord for MIDI programming and synthesizer sound design.

MIDI Numbers 64, 60, 63, 66, 69

Frequencies (Hz)

329.6275569128699, 261.6255653005986, 311.1269837220809, 369.9944227116344, 440