KOREAN OST Roommate (룸메이트) A.T (에이.티) – Good Morning (굿모닝) 굿모닝 gutmoning “Good Morning” Roommate OST Part. 2 2014.08.11 A.T Lyrics/작사: 윤종신 Composer/작곡: 윤종신 Arranger/편곡: 조정치