C Minor Seventh Chord

Chord Tones: C Minor Seventh Chord

Symbol: m7, min7, -7 — Formula: 1-♭3-5-♭7

DegreeNoteFrequency (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 TypeSymbol / Value
Lead Sheet SymbolCm7
All Common Symbolsm7, min7, -7
Interval Formula1-♭3-5-♭7
Harmonic Categorymildly 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

InversionNotes (low to high)Bass NoteSlash 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):

Songs Featuring the Minor Seventh Chord

Well-known songs where the C Minor Seventh Chord — or this chord type — plays a prominent role:

Tuning Frequencies Across Temperaments

Frequencies shown at A=440 Hz. View full temperament data for any note.

NoteEqual Temp.PythagoreanJust 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: