'HWAN' [So, Thank You] 언제 어디에 있든 나를 응원해준 사람들에게 들려주고 싶은 노래. CREDITS SONG BY HWAN Producer by MDR Composer by MDR , KEY Arranger by MDR , KEY Written by MDR , KEY Photo by HWAN Album Design by HWAN Mix & Mastered by MDR , KEY Chorus by MDR Bass by KEY MV by Spacestation (김영은), 이범준