Rookie group Soya N Sun finally debuted on today's Music Core! Although this duo is new to the music scene, they have already garnered much attention for Soya's family ties with Kim Jong Kook. In addition, their music video release for Laugh While Saying Goodbye has also gained much interest because it featured top stars Park Han Byul and So Ji Sup. Soya must take after her uncle in terms of vocal skills since her voice is amazing! And Sun's rapping skills are no joke either! Check out their debut performance here and tell us what you think of this new duo! http://www.youtube.com/watch?v=c4BaCwAjG9Q