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
- vi
- Stability / tension
- High tension — requires resolution
- Unstable degrees
- 3F4F#resolves up to the resolution tonic6A#b7Bresolves down to the tonic 3rd3F4F#resolves down to the 3rd
- Main resolution
- 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
- Instead of the tonic, the dominant resolves to the vi degree. Creates surprise and is often used to extend a musical phrase.In rock and blues, the dominant often moves to bVII or IV instead of the tonic, creating a modal flavor.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.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
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.
Circle of fifths
Highlighted major keys contain this chord among their diatonic harmonies.
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Practice
Keyboard Trainer
Reinforce it in practice — play and name notes on the interactive keyboard.
Test yourself
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