M&D (short for Midnight&Dawn) (also known as Kim Heechul & Kim Jungmo) was a South Korean pop/rock duo under SM Entertainment. The group consists of Super Junior's Kim Heechul and TraxX's Kim Jungmo. They wrote and produced every track they released and, agreed on releasing music which they can and want to do, regardless of the genre.
Their debut single, "Close Ur Mouth" was released in June 2011 under the name, M&D. In early 2016, SM Entertainment announced that the duo would return as Kim Heechul & Kim Jungmo (김희철&김정모).
The duo disbanded on April 30, 2019 after Jungmo left SM Entertainment.