C minor 11th chord
Cm11 chord for piano with keyboard diagram.
Explanation: The C minor eleventh is a six-note chord. For practical reasons the chord is normally played with omitted notes and/or inverted. The chord is often abbreviated as Cm11 (alternatively Cmin11).
Omissions: Cm11(no3): C - G - Bb - D - F; Cm11(no9): C - Eb - G - Bb - F.
Theory: The C minor eleventh chord is constructed by adding a third to a minor ninth chord.
Notes: C - Eb - G - Bb - D - F