C Minor 7th Guitar Chord — Open G
Guitar chord voicings in Open G tuning (D-G-D-G-B-D)
C Minor 7th Voicings in Open G
C Minor 7th filtered by fret:
C Minor 7th in Open G Tuning — Guide
The C Minor 7th chord is made up of the following notes: C, Eb, G, Bb.
Intervals: 1P, 3m, 5P, 7m.
The C Minor 7th chord in Open G tuning (D-G-D-G-B-D) requires different fingerings than standard tuning.
The C minor seventh chord layers a minor seventh on top of a minor triad, producing C, Eb, G, Bb with intervals 1P, 3m, 5P, 7m. This four-note voicing sounds mellow, warm, and relaxed — darker than a major seventh but less tense than a dominant seventh. Minor sevenths are ubiquitous in jazz, R&B, and lo-fi music, providing a smooth harmonic backdrop that invites improvisation and melodic exploration.
How to Play C Minor 7th
On guitar, C m7 is most commonly played as a barre chord. The E-shape barre at fret 8 or the A-shape barre provide the two most practical voicings. Mastering barre chord technique unlocks this chord in every position along the neck, giving you freedom to play in any key.
C Minor 7th in Progressions
C minor seventh commonly functions as the ii7 in D# major, the iii7 in G# major, or the vi7 in D# major. In minor keys, it serves as the i7, providing a smooth, jazzy foundation.
Common Substitutions
Cm9, Cm11, or D#maj7 provide smooth alternatives that preserve the chord's mellow character.
Difficulty: On guitar, this chord is intermediate — a barre or partial barre is likely needed, but the shape is manageable with practice.