Yesterday we revealed the fact that�Kim Jong Kook would be busy with his promotions of Can't Forget starting from this week's music programs. On today's episode of Mnet's M! Countdown, Kim Jong Kook finally performed Can't Forget! Check out his performance below! http://www.youtube.com/watch?v=8wCqkTaL4yI Furthermore, Kim Jong Kook is currently preparing his 15th anniversary concert of his debut on April 24th and 25th. For his concert, he will perform his hit songs including One Man, This Is The Person and Can't Forget.