BTOB (비투비) Featured Hyunshik (현식) KOREAN Lim Hyunsik of BTOB – SWIMMING SWIMMING “SWIMMING” [Single] Piece of BTOB Vol. 4 2017.07.24 Hyunsik Lyrics/작사: 임현식 Composer/작곡: 임현식 Arranger/편곡: 임현식