D Major Seventh Chord

Chord Tones: D Major Seventh Chord

Symbol: maj7, M7, △7 — Formula: 1-3-5-7

DegreeNoteFrequency (A=440, Equal)
1 D4 293.665 Hz
3 F♯4 369.994 Hz
5 A4 440.000 Hz
7 C♯4 277.183 Hz

Chord Notation

Notation TypeSymbol / Value
Lead Sheet SymbolDmaj7
All Common Symbolsmaj7, M7, △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 D4 F♯4 A4 C♯4 D D Major Seventh Chord
First Inversion F♯4 A4 C♯4 D4 F♯ D Major Seventh Chord/F♯
Second Inversion A4 C♯4 D4 F♯4 A D Major Seventh Chord/A
Third Inversion C♯4 D4 F♯4 A4 C♯ D Major Seventh Chord/C♯

Harmonic Function

The D major seventh chord commonly functions as the supertonic (ii) in C major or dominant (V) in G major. Its harmonic role varies by key — in major keys it provides extended harmonic tension.

The major seventh chord adds a major seventh to the major triad, creating a lush, sophisticated sound. It is central to jazz harmony and gives a dreamy, unresolved brightness. The D Major Seventh Chord specifically contains 4 notes: D, F♯, A, C♯ (formula: 1-3-5-7). On guitar, D-rooted chords use the open D string as their bass note, and the compact open-D shape is one of the most recognizable chord voicings. Rock anthems and folk songs frequently center on D chords, which provide a bright, cutting tone that projects well in ensemble settings.

Common Progressions

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

Songs Featuring the Major Seventh Chord

Well-known songs where the D 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
D4 293.665 Hz 293.332 Hz 294.329 Hz
F♯4 369.994 Hz 371.251 Hz 367.911 Hz
A4 440.000 Hz 440.000 Hz 436.043 Hz
C♯4 277.183 Hz 278.437 Hz 279.067 Hz

Scales Containing the D Major Seventh Chord

These scales include the D Major Seventh Chord as a diatonic or characteristic chord: