XIUMIN of EXO made his solo debut on September 26 with the mini album “Brand New” (SM Ent.). ⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀“Serenity” is produced & co-written by EKKO’s hitmakers JINBYJIN and Emily Yeonseo Kim.