A Minor-Major Seventh Chord

Chord Tones: A Minor-Major Seventh Chord

Symbol: mMaj7, m△7 — Formula: 1-♭3-5-7

DegreeNoteFrequency (A=440, Equal)
1 A 440.000 Hz
♭3 C 261.626 Hz
5 E 329.628 Hz
7 G# 415.305 Hz

Chord Notation

Notation TypeSymbol / Value
Lead Sheet SymbolAmMaj7
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 A C E G# A A Minor-Major Seventh Chord
First Inversion C E G# A C A Minor-Major Seventh Chord/C
Second Inversion E G# A C E A Minor-Major Seventh Chord/E
Third Inversion G# A C E G# A Minor-Major Seventh Chord/G#

Harmonic Function

The A minor major seventh chord commonly functions as the submediant (vi) in C major or dominant (V) in D major. 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 A 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 A 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
A 440.000 Hz 440.000 Hz 436.043 Hz
C 261.626 Hz 260.740 Hz 261.626 Hz
E 329.628 Hz 330.001 Hz 327.032 Hz
G# 415.305 Hz 417.657 Hz 418.601 Hz

Scales Containing the A Minor-Major Seventh Chord

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