C Minor Seventh Chord
Chord Tones: C Minor Seventh Chord
Symbol: m7, min7, -7 — Formula: 1-♭3-5-♭7
| Degree | Note | Frequency (A=440, Equal) |
|---|---|---|
| 1 | C | 261.626 Hz |
| ♭3 | D# | 311.127 Hz |
| 5 | G | 391.995 Hz |
| ♭7 | A# | 466.164 Hz |
Chord Notation
| Notation Type | Symbol / Value |
|---|---|
| Lead Sheet Symbol | Cm7 |
| All Common Symbols | m7, min7, -7 |
| Interval Formula | 1-♭3-5-♭7 |
| Harmonic Category | mildly dissonant |
Roman numeral (e.g. I, IV, V) and Nashville Number notation are key-dependent. See Keys pages for chord function within specific keys.
Inversions
| Inversion | Notes (low to high) | Bass Note | Slash Notation |
|---|---|---|---|
| Root Position | C – D# – G – A# | C | C Minor Seventh Chord |
| First Inversion | D# – G – A# – C | D# | C Minor Seventh Chord/D# |
| Second Inversion | G – A# – C – D# | G | C Minor Seventh Chord/G |
| Third Inversion | A# – C – D# – G | A# | C Minor Seventh Chord/A# |
Harmonic Function
The C minor seventh chord commonly functions as the tonic (I) in C major/minor. Its harmonic role varies by key — in major keys it provides subdominant or supertonic color.
The minor seventh chord adds a minor seventh to the minor triad, creating a smooth, mellow sound. It is ubiquitous in jazz, R&B, and funk as both a chord of repose and a stepping stone in progressions.
Common Progressions
The C Minor Seventh Chord frequently appears in these progression patterns (shown in Roman numeral notation relative to key):
ii-V-Ii-iv-v
Songs Featuring the Minor Seventh Chord
Well-known songs where the C Minor Seventh Chord — or this chord type — plays a prominent role:
- So What – Miles Davis
- Autumn Leaves – jazz standard
- Is This Love – Bob Marley
Tuning Frequencies Across Temperaments
Frequencies shown at A=440 Hz. View full temperament data for any note.
| Note | Equal Temp. | Pythagorean | Just Intonation |
|---|---|---|---|
| C | 261.626 Hz | 260.740 Hz | 261.626 Hz |
| D# | 311.127 Hz | 309.026 Hz | 313.951 Hz |
| G | 391.995 Hz | 391.111 Hz | 392.438 Hz |
| A# | 466.164 Hz | 463.538 Hz | 470.926 Hz |
Scales Containing the C Minor Seventh Chord
These scales include the C Minor Seventh Chord as a diatonic or characteristic chord: