Kim Min-jun (Korean: 김민준; Hanja: 金閔俊; born January 15, 1988), better known by his stage name Jun. K, is a South Korean singer, songwriter, rapper, record producer, dancer and actor. He is the main vocalist of 2PM. Formerly known as Kim Jun-su (Hangul : 김준수), he revealed on October 17, 2012, that due to family reasons, he would be changing his name to Min-jun, though his stage name would remain the same. Jun. K is the writer and the composer of 2PM's title songs, "Go Crazy","My House" and "With Me Again". He also wrote and composed many b-side tracks for 2PM. Aside from his group activities, Jun. K has released 3 digital singles, 2 extended plays in South Korea and 1 digital single, 4 extended plays in Japan, his first three Japanese albums which peaked at number two on the Oricon Weekly Albums Chart. His second Japanese album Love Letter ranked number one on both Billboard Japan "Top" and "Hot" album sales charts. His first Korean album, Mr. NO♡, debuted at number nine on Billboard World Albums chart.His third Japanese album "No Shadow" ranked number two on Billboard Japan "Top" and "Hot" album sales charts. His fourth Japanese album No Time ranked number three on the Oricon daily sales chart. (Source: Wikipedia)