B1A4 (비원에이포) KOREAN B1A4 – Smile Mask Smile Mask “Smile Mask” [EP] Rollin’ 2017.09.25 CNU, Jinyoung, Sandeul, Baro, Gongchan Lyrics/작사: 진영 (B1A4), 바로 (Baro) Composer/작곡: 진영 (B1A4)…