Romanization:

Happy birthday happy birthday
saengil chukahae i mal bakken
Happy birthday happy birthday
niga taeeonan ge naegen manyang chukbogin geoji
Oh i bame
nae moksoril deunneun ge
jeonben seonmurijiman
julkke igeotppuniya nan
eojireoun i sesange
naega sum shwin iyu
It’s you
Happy birthday happy birthday
saengil chukahae i mal bakken
Happy birthday happy birthday
niga taeeonan ge naegen manyang chukbogin geoji
Happy birthday to you (You)
haengbokagil barae
Happy birthday to you

English:

Happy birthday, happy birthday
I can only say ‘Happy Birthday’
Happy birthday, happy birthday
You being born is like an endless blessing to me
Oh, listening to
My voice tonight
Although presents are everything
this is all I have for you
In this dizzying world
The reason I breathe
It’s you
Happy birthday, happy birthday
I can only say ‘Happy Birthday’
Happy birthday, happy birthday
You being born Is like an endless blessing to me
Happy birthday to you (you)
I hope for your happiness
Happy birthday to you, oh

Korean:

Happy birthday happy birthday
생일 축하해 이 말 밖엔
Happy birthday happy birthday
니가 태어난 게 내겐 마냥 축복인 거지
Oh 이 밤에
내 목소릴 듣는 게
전부인 선물이지만
줄게 이것뿐이야 난
어지러운 이 세상에
내가 숨 쉰 이유
It’s you
Happy birthday happy birthday
생일 축하해 이 말 밖엔
Happy birthday happy birthday
니가 태어난 게 내겐 마냥 축복인 거지
Happy birthday to you (You)
행복하길 바래
Happy birthday to you