C#dim(maj7)

General info

Full name

C# Diminished major 7

Symbol

C#dim(maj7)

Root

C#

Quality

Diminished major 7

Chord notes

Functions & resolutions

Typical function in key

vii°Leading tone (vii°)D major

Stability / tension

Stable — can serve as major tonic

Most common resolutions

F#F# MajorG#G# MajorA#mA# Minor

Unstable degrees

4F#

b5G

resolves inward to the 4th

7C

1C#

resolves up to the root

Main resolution

C#dim(maj7)source

G#G# Major

Major chord C# is a stable tonic. As tonic it doesn't require resolution, but in a progression context typically moves to IV or V.

Other resolutions

C#dim(maj7)source

Deceptive resolution

A#mA# Minor

As the V degree, a major chord can defy expectations by moving to vi instead of I (deceptive cadence).

C#dim(maj7)source

Modal resolution

BB Major

In modal context, a major chord can freely move to bVII, bIII, or bVI — characteristic of Mixolydian mode.

C#dim(maj7)source

Jazz reharmonization

C#maj7C# 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).

C#dim(maj7)source

Functional resolution

G#G# 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

Harmony

Compatible scales

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