SM Entertainment fans were thrown for a loop when it was announced there was a new project unit in town. 'M&D' - comprised of Super Junior's Heechul and the Trax's Jungmo - revealed that they teamed up as a duo of stark contrast, both in image and in sound. Yet they managed to blend those differences together beautifully with "Close Ur Mouth", a fast-paced track with definite pop influences and a rockstar edge. Check out the song below and you can show your support by purchasing the music.