Cm · Guitar

Turn off the living-room light without moving a thing. Same furniture; different mood. That's exactly what Cm does to C major. Press play down there and watch the light go out.

Listen first

What you just heard

The trick is smaller than it sounds. Two of the three notes didn't move: C and G stayed put. Only the middle one dropped — a half step, the smallest distance in music — and became D#. Go back to the audio and catch the arpeggio note by note and stop at the second note. That's the one. Half a step separates a sunny day from a Monday morning.

Now it's your hands' turn

On the guitar, six strings give the chord room to breathe — some positions use them all, others ask you to mute the lowest ones. So the first position below is your way in — the position marked with ⭐ is the easiest to play. And do the exercise that's worth a whole lesson: C major, then Cm, then major again. Back and forth ten times, slowly. Your ear learns the difference before your brain does.

Precision Tuner — Before you play these shapes, get in tune — chromatic tuner and reference tones · try it in Chord & Fret

Once the first shape comes out without thinking, the positions below are waiting. That's where Cm lives in songs that roam the neck.

What is Cm?

Cm: C minor. The notes are C, Eb, G (fixed-do: Do, Mi♭, Sol) — the degrees 1–b3–5.

Where this chord lives

In real music, Cm works almost always as i in C minor, v in F minor, iv in G minor. In pop everywhere it tends to be the famous vi — the chord the chorus runs to when it wants to get serious without changing key. You've heard it a thousand times; now you'll start noticing it.

Transpose & Capo — Need it in another key? Move the whole chart and find the easiest capo · use it in Chord & Fret

Identify Chord — Found a shape on your own fretboard? The app names it back · see it in Chord & Fret

Real songs pass through here: Pagode · ciclo do pagode · Pagode · subida cromática · Samba · ciclo de quintas · Samba · ii-V-I

Where it tends to go

Treating Cm as the home chord (I) of its key, it usually moves toward the pre-dominant (Dm / F) or the dominant (G / B°) — and the dominant pulls back home. It's a tendency, not a law.

Every shape of Cm lives in Chord & Fret Pro — 4 instruments, 16 tunings, 41 chord types and 57 scales, in every key. Start free. Unlock everything with Pro. Plays offline. Works offline, no account needed.

When you want to go further

To solo over it, C Dorian (C D Eb F G A Bb · 1 2 b3 4 5 6 b7: the minor scale with a major sixth — the minor that smirks); C Aeolian (C D Eb F G Ab Bb · 1 2 b3 4 5 b6 b7: the natural minor, the major scale's relative sibling); C Phrygian (C Db Eb F G Ab Bb · 1 b2 b3 4 5 b6 b7: the minor with a lowered second — a Spanish seasoning) work in full. The swaps below are the chord's cousins: different color, same job.

Scale — The whole scale on the neck — in boxes or three notes per string, with an exercise and a tempo ramp · use it in Chord & Fret

Improvising in context

To improvise over Cm as home, the C Aeolian scale covers it whole — it contains every note of the chord. And when the dominant (G) pulls back, the leading tone B is the note that wants to resolve home.

Swaps that work:

• Ebmaj7Ebmaj7Ebmaj7Ebmaj7 — Relative major (♭III)
• F7F7F7F7 — It's the ii; resolves to this V

Reharmonize — Want richer substitutions? Reharmonize the progression in a tap · open in Chord & Fret

This chord has a calmer sibling: Cm7. Same seriousness, relaxed shoulders — worth the visit.

Updated August 5, 2026