Cm Mineur Accord

A darker, more melancholic triad with a minor third instead of a major third.

Cm Accord — Quick Answer & Harmonic Definition

The Cm (Minor) chord consists of the notes C, D#, G. It is constructed from the root note C using the minor interval formula (0–3–7 semitones).

Formula: 0 – 3 – 7
Notes
C – D# – G
Intervals (semitones)
0 – 3 – 7
Type
Triad

Cm on Piano

Press highlighted keys simultaneously to play the Cm chord.

R
C (Root (R))
2
D# (Minor 3rd (♭3))
3
G (Perfect 5th)

Cm on Guitar

Fret numbers (low E → high e string): x35543 (x=mute, 0=open)

x
E
3
A
5
D
5
G
4
B
3
e

Interval Analysis

Degree Interval Name Semitones Note in C
Root Root (R) 0 C
3rd Minor 3rd (♭3) 3 D#
5th Perfect 5th 7 G

About the C Mineur Chord

The Cm chord (C Mineur) consists of 3 notes: C, D#, G. A darker, more melancholic triad with a minor third instead of a major third.

To build any minor chord, apply intervals of 0, 3, 7 semitones above the root. Starting from C: the notes land on C, D#, G.

Playing Cm on Piano

Press C, D#, G simultaneously. In root position, C is lowest. First inversion places D# in the bass for a lighter sound; second inversion uses G as the bass note.

Common Chord Progressions Using Cm

  • I–IV–V: Cm – Fm – Gm (blues and rock)
  • I–V–vi–IV: Cm – G – Am – F (pop staple)
  • I–vi–IV–V: Cm – Am – F – G (50s progression)

The Cm Chord in Context

As a minor chord, Cm is the tonic (i) in the key of C minor. It also functions as the relative minor (vi chord) in D# major, the ii chord in A# major, and the iii chord in G# major.

Knowledge Base & FAQs

Cm Chord — Frequently Asked Questions

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What notes are in the Cm chord?

The C Mineur chord contains: C, D#, G.

These notes are derived by applying the minor interval formula (0–3–7 semitones) to the root note C.

What is the Cm chord used for?

A darker, more melancholic triad with a minor third instead of a major third.

The Cm chord is used across pop, rock, jazz, and classical music. As the I chord in the key of C major, it functions as the most stable resting point in progressions.

How do you play Cm on piano?

On piano, play C, D#, G simultaneously.

In root position, C is the lowest note. Inversions move the bass note up — first inversion has D# lowest, second inversion has G lowest.

How many notes are in a minor chord?

A minor chord has 3 notes: C, D#, G (in C).

It is a triad — the most fundamental chord type.

What is the difference between C major and C minor?

The C major chord (C–E–G) uses a major third (4 semitones), giving it a bright, happy sound.

The C minor chord (C–D#–G) uses a minor third (3 semitones), giving it a darker, emotional sound.

What key does Cm belong to?

Cm naturally serves as the I chord in the key of C major.

It also appears as IV in the key of G major, and as V in the key of F major.

Can I play Cm on ukulele?

Yes.

The ukulele uses GCEA tuning with 4 strings. The Cm chord notes (C, D#, G) can be fretted on a ukulele, though the shapes differ from guitar due to the 4-string layout and shorter scale.

What chords go well with Cm?

In the key of C major, Cm pairs naturally with F major (IV), G major (V), and Am (vi).

The classic I–IV–V (Cm–F–G) is the foundation of blues, country, and rock.

What is a chord inversion of Cm?

An inversion places a non-root note in the bass.

Cm root position: C in bass. First inversion: D# in bass. Second inversion: G in bass. Inversions create smoother bass line movement without changing the harmony.

How do I memorize the notes in a minor chord?

Remember the formula: 0–3–7 semitones from root.

For Cm: start on C, add 3 semitones, then 7 semitones. Practicing this across all 12 roots builds instant recognition of any minor chord.