C11 Chord on Guitar
C11 = C – E – G – A# – D – F (Root, Major 3rd, Perfect 5th, Minor 7th, Major 9th, Perfect 11th)
C11 is where extended dominant chords start running into a real problem: an eleventh is the same pitch class as a fourth, and a fourth sitting a half-step above the major third clashes badly if both are present. Guitarists solve it the same way pianists do — drop the third — which means the voicing played here at the eighth fret barely resembles a conventional major-based chord at all.
The full theoretical stack is C-E-G-A#-D-F, but the guitar voicing keeps only root, flat seventh, and eleventh, skipping the third, fifth, and ninth entirely. Without the third, C11 leans much closer to a 7sus4 sound than to anything recognizably major or minor — it's an open, suspended color rather than a fully spelled-out extended chord, which is exactly how it functions in practice: more a rhythmic, ambiguous texture than a chord defined by its third.
Fingerings
Barre (8th fret)
How to Practice It
Because so many notes are dropped, this voicing is actually simpler to finger than its five-syllable name suggests — most of the shape rides flat across the barre with only one note independently fretted. The real skill is recognizing by ear that this sound is functioning as a dominant color even without the third present, since a player expecting a normal major seventh chord's brightness will be caught off guard by how open and unresolved an 11th chord actually sounds.
Common Progressions
- C11 – F (V11 – I, an 11th chord easing into its resolution)
- C11 – C7 – F (a common move from suspended color to full resolution)
- G – C11 – F (a jazz-funk cadence using the 11th's ambiguity)
- Dm7 – C11 – F (ii7 – V11 – I in F major)
FAQ
- Why does the guitar voicing of C11 drop the third?
- The eleventh (F) sits a half step above the major third (E), and playing both together on the same instrument creates a harsh, muddy clash, so the standard practice — on guitar and piano alike — is to leave the third out entirely and let the eleventh stand on its own.
- Does C11 sound like a major or minor chord?
- Neither, really — with the third removed, it sits in a suspended, ambiguous zone closer to a sus4-flavored dominant seventh than to a fully spelled major or minor chord, which is part of why it's used more for color and tension than for clear harmonic identity.
- How is C11 different from C7sus4?
- They're closely related in sound, but C11 keeps the theoretical ninth in its formula even though most guitar voicings drop it along with the third and fifth, while 7sus4 is built directly from a suspended fourth without any implied ninth at all — in practice the two often sound nearly identical on guitar.
- Where does an 11th chord like C11 typically get used?
- It shows up most often in jazz-funk and gospel-influenced rhythm playing, where its open, unresolved character adds harmonic interest without committing fully to either a major or minor color, especially in vamping sections that stay on one chord for a while.
- Is C11 harder to finger than C9?
- Not really — with fewer notes actually voiced (the third, fifth, and ninth are all dropped), C11 is often simpler to finger than C9, even though its name suggests a more complex chord.
- What does C11 resolve to?
- Like any dominant-family chord built on C, its most natural resolution is to F major, though because of its suspended character it often moves first to a plain C7 before landing on F, rather than resolving directly.
- Can C11 be played as a purely rhythmic texture rather than a functional chord?
- Yes — because it lacks the third that would define it clearly as major or minor, it's frequently used less for its harmonic function and more as a rhythmic color, especially in vamp-based funk and gospel playing where the chord just sits and breathes rather than resolving anywhere.
Related: how chords are built, chord finder.