Fdim(maj7)

F Diminished major 7

Octaves

Musical context

How the chord relates to the scale, mode, key and progression.

Theory

General info

Full name
F Diminished major 7
Symbol
Fdim(maj7)
Root
F
Quality
Diminished major 7

Chord notes

1Froot
b3Abminor 3rd
b5Cbdim 5th
7Emajor 7th

Functions & resolutions

Stability / tension
Stable — can serve as major tonic
Most common resolutions
Unstable degrees
4Bb
b5B
resolves inward to the 4th
7E
1F
resolves up to the root
Main resolution
Fdim(maj7)source
CC Major
Major chord F is a stable tonic. As tonic it doesn't require resolution, but in a progression context typically moves to IV or V.
Other resolutions
Fdim(maj7)source
Deceptive resolution
DmD Minor
As the V degree, a major chord can defy expectations by moving to vi instead of I (deceptive cadence).
Fdim(maj7)source
Modal resolution
EbEb Major
In modal context, a major chord can freely move to bVII, bIII, or bVI — characteristic of Mixolydian mode.
Fdim(maj7)source
Jazz reharmonization
Fmaj7F Major 7
In jazz, a major chord is enriched to maj7, 6/9, or add9 and can smoothly transition into a ii-V of another key (modulation).
Fdim(maj7)source
Functional resolution
CC Major
As the IV degree (subdominant), a major chord can resolve to V or directly to I (plagal cadence).

Features

Character
Diminished, with a major 7th
Characteristic interval
Minor 3rd (m3), Diminished 5th (b5), Major 7th (M7)
Description
The minor 3rd and diminished 5th form a diminished triad, while the major 7th adds semitone tension toward the octave. Two independent dissonances make the chord sharply unstable.
Application
  • Chromatic harmony
  • Rare passing sonorities
  • Modern classical and jazz music

Voicing & structure

Root position

v1F(F4)Bass
root
v2Ab(Ab4)m3from F
v3Cb(Cb4)m3from Ab
v4E(E5)P4from Cb

Harmony

Compatible scales

All chord tones are contained in these scales — use them for improvisation.

This chord on guitar 🎸

See how Fdim(maj7) looks on guitar.

Explore

Circle of fifths

Highlighted major keys contain this chord among their diatonic harmonies.

CAmGEmDBmAF#mEC#mBG#mF#D#mDbBbmAbFmEbCmBbGmFDmFmajor
Relative key
Dominant
Subdominant
Key signature
1 flat (Bb)

Practice

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Frequently Asked Questions