C Minor-Major Seventh Chord

Chord Tones: C Minor-Major Seventh Chord

Symbol: mMaj7, m△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 B 493.883 Hz

Chord Notation

Notation TypeSymbol / Value
Lead Sheet SymbolCmMaj7
All Common SymbolsmMaj7, m△7
Interval Formula1-♭3-5-7
Harmonic Categorytense

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 B C C Minor-Major Seventh Chord
First Inversion D# G B C D# C Minor-Major Seventh Chord/D#
Second Inversion G B C D# G C Minor-Major Seventh Chord/G
Third Inversion B C D# G B C Minor-Major Seventh Chord/B

Harmonic Function

The C minor major 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-major seventh chord combines a minor triad with a major seventh, creating a uniquely tense sound. It appears in descending bass lines and is characteristic of film noir and jazz.

Common Progressions

The C Minor-Major Seventh Chord frequently appears in these progression patterns (shown in Roman numeral notation relative to key):

Songs Featuring the Minor-Major Seventh Chord

Well-known songs where the C Minor-Major 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
B 493.883 Hz 495.000 Hz 490.548 Hz

Scales Containing the C Minor-Major Seventh Chord

These scales include the C Minor-Major Seventh Chord as a diatonic or characteristic chord: