KOREAN SF9 (에스에프나인) SF9 – OK Sign OK Sign [EP] 9loryUS2020.07.06 Lyrics/작사: 한성호, 주호, 휘영Composer/작곡: Willie Weeks, Chris MeyerArranger/편곡: Willie Weeks Inseong, Youngbin, Jaeyoon, Dawon, Zuho,Rowoon, Taeyang,…