April (에이프릴) KOREAN APRIL – Oh-e-Oh Oh-e-Oh the Ruby 2018.10.16 Chaekyung, Chaewon, Naeun, Yena, Rachel, Jinsol Lyrics/작사: 타이비언 Composer/작곡: 타이비언, 누플레이(NUPLAY), Isaac Han, 이예준, MHL Arranger/편곡:…