C11 Piano Chord
The C11 chord contains the notes C, E, G, Bb, D, F, built from the intervals 1 – 3 – 5 – b7 – 9 – 11.
Chord formula
1 – 3 – 5 – b7 – 9 – 11
Common piano voicing
Active voicing: C – Bb – D – F
Default voicing. Notes C, Bb, D, F.C 11
- Notes
- C, E, G, Bb, D, F
- Intervals
- 1, 3, 5, b7, 9, 11
- Also known as
- C11, C dom11
Full spelling and piano voicings
- CDEFGABCDEFGABBb
- CDEFGABCDEFGABBb
Practice Chords in C
Related chords
Which Notes Do You Actually Play?
C11 has more tones than comfortably fit under one hand. See the practical voicing pianists actually play, exactly which tones are left out, and why.
View C11 VoicingsNot sure which chord you are playing?
Play the notes on a piano or MIDI keyboard and the Reverse Chord Finder identifies the chord, its inversion, and any slash-chord name.
Open the Reverse Chord FinderRelated learning
How it is built
C11 stacks a 9th and an 11th above a dominant seventh chord. Because the natural 11th clashes with the major 3rd a half step below it, the 3rd is often left out in practice — the common piano voicing on this page reflects that.
Common musical function
Dominant 11 chords add a suspended, unresolved color to dominant harmony — common in funk and gospel, where omitting the 3rd lets the 11th ring cleanly.
Beginner practice advice
Practice C in its full spelling until the shape feels automatic, then compare it with the reduced piano voicing shown below to hear which notes carry the chord's color in a practical hand span. Use the audio button to check your voicing, and drill short changes to neighboring chords in the same key.
Moving into and out of the chord
Look for shared notes with nearby chords in the key — keeping a finger on a common tone makes changes smoother. G Major (dominant) and F Major (subdominant) are good starting points for short practice loops — see the full related chords list below for more.
FAQ
- What notes are in a C11 chord?
- A C11 piano chord uses the notes C, E, G, Bb, D, F.
- How do I practice C on piano?
- Start with the full chord spelling, then compare it with the reduced piano voicing, listen with the audio button, and practice short changes to related chords in the same key.
- Can I explore C in every key?
- Yes. Open the Interactive Chord Explorer to transpose this chord quality across all twelve roots, or use Practice Mode to drill changes in time.
Ready to practice C11 Piano Chord?
Use Go Practice to drill chord changes with a metronome and build muscle memory in this key.