C#11

C# 11th

Octaves

Musical context

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

Theory

General info

Full name
C# 11th
Symbol
C#11
Root
C#
Quality
11th

Chord notes

1C#root
3E#major 3rd
5G#perfect 5th
b7Bminor 7th
2D#major 2nd
4F#perfect 4th

Functions & resolutions

Typical function in key
viRelative tonic (vi)E major
Stability / tension
High tension — requires resolution
Most common resolutions
Unstable degrees
3F
4F#
resolves up to the resolution tonic
6A#
b7B
resolves down to the tonic 3rd
3F
4F#
resolves down to the 3rd
Main resolution
C#11source
F#F# Major
Dominant 7th C#7 naturally resolves up a 4th to F#. It is the tritone between the chord's 3rd and 7th that creates this pull.
Other resolutions
C#11source
Deceptive resolution
D#mD# Minor
Instead of the tonic, the dominant resolves to the vi degree. Creates surprise and is often used to extend a musical phrase.
C#11source
Modal resolution
BB Major
In rock and blues, the dominant often moves to bVII or IV instead of the tonic, creating a modal flavor.
C#11source
Jazz reharmonization
G7G Dominant 7
Tritone substitution: C#7 can be replaced by G7 (a tritone away). Both chords share the same tritone between the 3rd and 7th, resolving to the same tonic.
C#11source
Functional resolution
C#sus4C# Sus4
The dominant can resolve beyond the tonic: moving to IV (subdominant) or to a suspension (sus4) are common alternatives in pop and folk music.

Substitutions

Tritone substitution

Features

Character
Dominant, with 9th and 11th
Characteristic interval
Minor 7th (b7), 11th
Description
The minor 7th preserves dominant function, while the 3rd and 11th form a semitone dissonance that is usually separated by register.
Application
  • Funk, soul
  • Jazz fusion
  • Rhythm guitar à la Stevie Wonder

Voicing & structure

Root position

v1C#(C#4)Bass
root
v2E#(E#4)M3from C#
v3G#(G#4)m3from E#
v4B(B4)m3from G#
v5D#(D#5)M3from B
v6F#(F#5)m3from D#

Harmony

Compatible scales

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

This chord on guitar 🎸

See how C#11 looks on guitar.

Explore

Circle of fifths

Highlighted major keys contain this chord among their diatonic harmonies.

CAmGEmDBmAF#mEC#mBG#mF#D#mDbBbmAbFmEbCmBbGmFDmDbmajor
Relative key
Dominant
Subdominant
Key signature
5 flats (Bb, Eb, Ab, Db, Gb)

Practice

Keyboard Trainer

Reinforce it in practice — play and name notes on the interactive keyboard.

Open Trainer

Test yourself

(Press any key to start)

Frequently Asked Questions