C 11 Guitar Chord Chart and Fingering (C Add 11) - TheGuitarLesson.com. The 11th Chord is less common than the 9th. It is formed by adding a the 11th (4th) to a dominant 9th chord (1 2 3 5 b7) to form 1 2(9) 3 4(11) 5 b7. If the 3rd is omitted is sometimes called a 9sus4.
What notes are in an 11th chord?
The eleventh in an eleventh chord is, "almost always sharpened, especially in jazz," at least in reference to the third, with CM11 (major eleventh): C–E–G–B–D–F, Cm11 (minor eleventh): C–E♭–G–B♭–D–F, and C11 (dominant eleventh): C–E–G–B♭–D–F.