Sunmi, DIA, B.A.P, NRG, ASTRO, Eunhyuk, and others join together to sing 'Fly Day'
Artists includedSunmi,Super Junior'sEunhyuk,Baek Ji Young,NRG,HALOmembersOOON,Jaeyong, andHeechun,DIAmembersJung Chae Yeon,Jooeun,Davichi,ASTRO'sMoonbinandMJ,B.A.P's YoungjaeandJongup, B.I.G's HeedoandGunmin, Kim Jo Han, The One,andJin Se Yeonsinging their hearts out in the recording studio in complete harmony.