The short version
- Cm7 is C minor seventh. Its notes are C, E♭, G and B♭ (formula 1 – ♭3 – 5 – ♭7).
- Easiest way to play it: a barre on the 3rd fret, frets x 3 5 3 4 3 from low E to high E (x = don’t play).
- It sounds mellow, cool and smooth. Use it as the ii in a ii–V–I, as a softer vi, or vamp on it for funk, R&B and neo-soul grooves.
- Cm7 turns up in 6 keys: A♭ major (as the iii7), E♭ major (as the vi7), B♭ major (as the ii7), F minor (as the v7) and C minor (as the i7), and more in the table below.
- Can’t barre yet? Capo 1 and play an open Bm7 shape.
How to play Cm7 on guitar, step by step
Start with the shape marked “Start here” above: the barre chord, root on the 5th string (3rd fret).
- Lay your index finger flat across fret 3, from the 5th (A) string to the 1st (high E) string. That’s the barre: press near the fret wire and roll the finger slightly onto its side.
- Put your middle finger on fret 4 of the 2nd (B) string.
- Put your ring finger on fret 5 of the 4th (D) string.
- Don’t play the low E string: skip it, or touch it lightly with a spare finger so it can’t ring.
- Strum from the 5th (A) string down, then press Strum on this page to check it sounds the same.
Once that’s comfy, try the other shape. Shape 2 is the barre chord, root on the 6th string (8th fret): 8 10 8 8 8 8. Same chord, different spot on the neck, which helps when the next chord lives nearby.
No barre? No problem. Pop a capo on the 1st fret and play the open Bm7 shape: it comes out as Cm7. (Capo 3 with an open Am7 shape works too.) Barre chords take everyone a few weeks. Mine sounded like a kettle for a month.
Notes in the Cm7 chord
Cm7 is built from 4 notes. On guitar you’ll often play some of them twice, on different strings. That’s normal; the chord is still Cm7.
| Note | Interval | What it does |
|---|---|---|
| C | 1 root | Names the chord and anchors the bass. |
| E♭ | ♭3 minor third | Makes it minor (sad). |
| G | 5 perfect fifth | Adds weight; often the first note left out. |
| B♭ | ♭7 minor (flat) seventh | The bluesy pull towards the next chord. |
What Cm7 sounds like, and when to use it
A minor chord with a flat seventh added. Softer and cooler than a plain minor: less “rainy train window”, more “lo-fi beats to study to”. Use it as the ii in a ii–V–I, as a softer vi, or vamp on it for funk, R&B and neo-soul grooves.
What key is Cm7 in?
Cm7 turns up in 6 keys: A♭ major (as the iii7), E♭ major (as the vi7), B♭ major (as the ii7), F minor (as the v7) and C minor (as the i7), and more in the table below. Tap a key to see the rest of its chords on the circle of fifths.
| Key | Numeral | Spelled as |
|---|---|---|
| A♭ major | iii7 | Cm7 |
| E♭ major | vi7 | Cm7 |
| B♭ major | ii7 | Cm7 |
| F minor | v7 | Cm7 |
| C minor | i7 | Cm7 |
| G minor | iv7 | Cm7 |
Chords that go with Cm7
Here’s a progression to try: Cm7 – F7 – B♭maj7 – B♭maj7 (ii7–V7–Imaj7), jazz’s favourite handshake, with this chord as the ii.
More progressions → Transpose it →
Using Cm7 in a Suno prompt
Suno pays attention to chord names in a style prompt, at least some of the time. Put the progression in, keep the BPM, and let it fill in the rest. Then compare its guitar part with the shapes above.
Lo-fi hip hop, 82 BPM, chord progression Cm7 – F7 – B♭maj7 – B♭maj7, mellow minor seventh chords, dusty drums, warm Rhodes, jazzy guitar, chill and late-night
Cm7 chord FAQ
What notes are in the Cm7 chord?
Cm7 has 4 notes: C (the root), E♭ (the minor third), G (the perfect fifth) and B♭ (the minor (flat) seventh). The chord formula is 1 – ♭3 – 5 – ♭7.
How do you play Cm7 on guitar?
The medium way is barre chord, root on the 5th string (3rd fret). Strings from low E to high E: x 3 5 3 4 3 (x means don’t play that string). Lay your index finger flat across fret 3, from the 5th (A) string to the 1st (high E) string. That’s the barre: press near the fret wire and roll the finger slightly onto its side. Put your middle finger on fret 4 of the 2nd (B) string. Put your ring finger on fret 5 of the 4th (D) string. Don’t play the low E string: skip it, or touch it lightly with a spare finger so it can’t ring.
What does the “m7” in Cm7 mean?
It tells you the chord type: Cm7 is C minor seventh. A minor chord with a flat seventh added. Softer and cooler than a plain minor: less “rainy train window”, more “lo-fi beats to study to”.
What key is Cm7 in?
Cm7 turns up in 6 keys: A♭ major (as the iii7), E♭ major (as the vi7), B♭ major (as the ii7), F minor (as the v7) and C minor (as the i7), and more in the table below. Major keys: A♭ major, E♭ major, B♭ major. Minor keys: F minor, C minor, G minor.
What is the difference between Cm7 and Cm?
Cm7 is Cm with one extra note, the flat seventh (B♭). It softens the sadness and makes it sound smoother and jazzier.
How can I play Cm7 without a barre?
Use a capo. Put it on the 1st fret and play the open Bm7 shape or Put it on the 3rd fret and play the open Am7 shape. It sounds as Cm7. You can also play just the top three or four strings of the barre shape.
Other minor 7th chords
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