There's a new vocalist group in town, and they've announced their impending arrival through an MV teaser! I STORY is a four-member group that's fought hard to make their debut in the mainstream industry. Leader Nam Chang Woo and Lee Dong Wook were members of an underground group called 'Urbaniq', while Noh Young Ho and Hyun Joon were gearing up for solo debuts. They came together as a talented quartet, with Nam Chang Woo acting as the group's rapper. The teaser plays a snippet of their title track, "The Inside of My Mouth is Burning", which tells the tale of a man who must endure parting from a woman he has given his all to. The quartet will be releasing their debut work on April 1st, but until it comes out, check out the teaser below! Source: Daum