Romanization:
Hey boys, [JS] no more worries, put on a smile for me
Hey girls, [JS] no pain no gain is what they say, right
Ok, [TF] no need to stress, ok,
[TF] brush it off your chest
Through the rain there's a brighter day, don't worry be happy
[TY] Eo jireowo jukgesseo mwoga geuri mari manha
[SH] Momseori seori chyeo jineun i nal jom bwa
[JS] Nuga meonjeo geuman jom haejogeumman chama gwaenchanha
[SN] I'm sorry, sorry nuga meonje marhaebwa
[TY] Ooh, boys, ooh, girls, be happy, hey, be happy, hey
[TF] Ooh, boys, ooh, girls, be happy, hey, be happy, ha
[JS] I reokung jeoreokung mwoga geuri mari manha
Oh, utja utja geunyang utjeo beorija
[TY] Iraera jeoraera apeun mareun haji mara
Oh, utja utja geunyang useo beorija
Ha, ha, ha, ha, ho, ho, ho, ho
[YA] geunyang utjaHa, ha, ha, ha, ho, ho, ho,
[SY] ho geunyang utjaHa, ha, ha, ha, ho, ho, ho,
[SN] ho geunyang utjaHa, ha, ha, ha, ho, ho, ho, ho
[SH] geunyang utjaHey boys,
[YR] kogae sugiji malgo geunyang keuge useobwa
Hey girls, [YR] jjajeungnago taptaphaedo it's gonna be alright
[TF] Smile for me, alright smile for me, alright
Through the rain there's a brighter day, don't worry be happy
[JS] Saramdeuri moduga apeudago ureodo
[SN] Oh, doridori jal dwoelgeoya gwaenchanha
[TF] Apeudago datumyeon jeongmal igeon anijanha
[SH] Nae sonisoni anirago hajanha
[SY] Ooh, boys, ooh, girls, be happy, hey, be happy, hey
[HY] Ooh, boys, ooh, girls, be happy, hey, be happy, ha
[SH] I reokung jeoreokung mwoga geuri mari manha
Oh, utja utja geunyang utjeo beorija
[TY] Iraera jeoraera apeun mareun haji mara
Oh, utja utja geunyang useo beorija
Ha, ha, ha, ha, ho, ho, ho, ho
[JS] geunyang utjaHa, ha, ha, ha, ho, ho, ho, ho
[YR] geunyang utja Ha, ha, ha, ha, ho, ho, ho, ho
[YA] geunyang utja Ha, ha, ha, ha, ho, ho, ho, ho
[SH] geunyang utja
[TF] Don't worry, worry, don't, don't worry baby
Be happy, hey, be happy, hey
[SY] Don't worry, worry, don't, don't worry baby
Be happy, hey, be happy, ha
[JS] I reokung jeoreokung mwoga geuri mari manha
Oh, utja utja geunyang utjeo beorija
[TY] Iraera jeoraera apeun mareun haji mara
Oh, utja utja geunyang useo beorija