C minor major 9th chord

CmM9 chord for piano with keyboard diagram.
Explanation: The C minor major ninth is a five-note chord. The chord has various abbreviations, including CmMaj9, Cm(M9) and Cminmaj9.
Theory: The CmM9 chord is constructed with a root, a minor third, a perfect fifth, a major seventh and a major ninth. It shares features of both minor and major ninth.