2YOON - Why not, 투윤 - 와이 낫, Music Core 20130119

☞ Did you enjoy this video? Plz click “like“! ☞ For more awesome videos, subscribe our channels!! Daily update available! ☞ Watch more clips of 4minute 공식홈페이지 방송시간 SAT, 16:10 ~ 2YOON - Why not, 투윤 - 와이 낫, Show! Music Core(쇼! 음악중심), EP343, 2013/01/19, MBC TV, Republic of Korea