Cm9 9ª Menor Acorde

The C 9ª Menor chord contains: C, D#, G, A#, D.

These notes are derived by applying the minor 9th interval formula (0–3–7–10–14 semitones) to the root note C.

Minor 7th chord with an added 9th.

Rich texture used in neo-soul and R&B. The Cm9 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.

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

A minor 9th chord has 5 notes: C, D#, G, A#, D (in C).

It is an extended chord with 5 or more notes.

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.

Cm9 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.

Yes.

The ukulele uses GCEA tuning with 4 strings. The Cm9 chord notes (C, D#, G, A#, D) can be fretted on a ukulele, though the shapes differ from guitar due to the 4-string layout and shorter scale.

In the key of C major, Cm9 pairs naturally with F major (IV), G major (V), and Am (vi).

The classic I–IV–V (Cm9–F–G) is the foundation of blues, country, and rock.

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

Cm9 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.

Remember the formula: 0–3–7–10–14 semitones from root.

For Cm9: start on C, add 3 semitones, then 7 semitones, then 10 semitones, then 14 semitones. Practicing this across all 12 roots builds instant recognition of any minor 9th chord.