Last night, we reported on SM Entertainment's new project duo "M&D", which is comprised of Super Junior's Heechul and Trax's Jungmo.

"M&D" stands for "Midnight & Dawn", a name that's perfect for their unique clash in musical style. With one member being an idol popstar and the other being a guitarist for a rock band, we can definitely believe their claim when they say they'll bring a sound "unlike anything you've heard before".

A teaser clip of their debut track, "Close Ur Mouth", was uploaded onto the 'net recently. Check it out below, and toss us your thoughts on this new project duo!

M&D will release the full song on June 22nd, so stay tuned to allkpop for updates! -- Tip: madzior111