[Romanized:]

Tonight jeoldae itji mothal
Kkumman gateun special somethin'
You and I gachi chuneun chumkkaji (Yeah)
Moonlight arae eungeunhan bit
Gureum han jeomdo eomneun haneul
Tumyeonghan uriui sok gata (Yeah)

Our night is itji mothal bam
Pokjugi teojimyeo chuka
Haneun saramdeuri applause, yeah, yeah
Disco rhythme matchun chum
Funkyhan rideume matchwo
Jeomjeom eumage neol matgyeo, oh, yeah

Itjana neowa nan hwansangui johap
Wanbyeokan johwareul irumyeo
So pumping, pumping, naui gaseumi
Jumping, jumping, ttwieodaniji
Areumdaun bam gaunde chumeul chwo

Unforgettable, u-unforgettable (Uh-uh)
Unforgettable
Ichyeojiji ana oneul isungan
Unforgettable, u-unforgettable (Uh-uh)
Unforgettable
Tonight, (Uh-huh) this night (Uh-huh)

Alright, tonight is the night
Oneul nari joa
Neoui mami jotaneun daero
Hambureo gajwo (Oh, yeah)
Nae ireum hanhaeya hanhae
Maja heoteunjit an hae
Geokjeong pillyo eopdago
Dareun namjadeureun da eollekkolleri
Oneureun gibun naeyagesseo kkeonae domperi
Celebrate, celebrate, nongnyeo eoreum
Dwaebojago eoreun jikijago beobeun

Disco rhythme matchun chum
Funkyhan rideume matchwo
Jeomjeom eumage neol matgyeo

Itjana neowa nan hwansangui johap
Wanbyeokan johwareul irumyeo
So pumping, pumping, naui gaseumi
Jumping, jumping, ttwieodaniji
Areumdaun bam gaunde chumeul chwo (Aw)

Unforgettable, u-unforgettable (Uh-uh)
Unforgettable
Ichyeojiji ana oneul isungan
Unforgettable, u-unforgettable (Uh-uh)
Unforgettable
Tonight, (Uh-huh) this night (Uh-huh)

Hey, you know what it is? (You know what it is?)
It's time for you and me
Hamkke majihan achim
Jigeum gonggineun so fresh
I wanna love you 'til the sun comes up
You and I, ooh-ooh-ooh

Unforgettable, u-unforgettable (Unforgettable, yeah, yeah)
Unforgettable (Uh)
Bulgeun bulkkonnori gadeukan i bam
Unforgettable, u-unforgettable (Oh-oh, yeah, yeah)
Unforgettable
Tonight, (Uh-huh) this night (Uh-huh)

Yeah
This night

[Korean:]

Tonight 절대 잊지 못할
꿈만 같은 special somethin'
You and I 같이 추는 춤까지 (Yeah)
Moonlight 아래 은근한 빛
구름 한 점도 없는 하늘
투명한 우리의 속 같아 (Yeah)

Our night is 잊지 못할 밤
폭죽이 터지며 축하
하는 사람들이 applause, yeah, yeah
Disco rhythm에 맞춘 춤
Funky한 리듬에 맞춰
점점 음악에 널 맡겨, oh, yeah

있잖아 너와 난 환상의 조합
완벽한 조화를 이루며
So pumping, pumping, 나의 가슴이
Jumping, jumping, 뛰어다니지
아름다운 밤 가운데 춤을 춰

Unforgettable, u-unforgettable (Uh-uh)
Unforgettable
잊혀지지 않아 오늘 이순간
Unforgettable, u-unforgettable (Uh-uh)
Unforgettable
Tonight, (Uh-huh) this night (Uh-huh)

Alright, tonight is the night
오늘 날이 좋아
너의 맘이 좋다는 대로
함부러 가줘 (Oh, yeah)
내 이름 한해야 한해
맞아 허튼짓 안 해
걱정 필요 없다고
다른 남자들은 다 얼레꼴레리
오늘은 기분 내야겠어 꺼내 돔페리
Celebrate, celebrate, 녹여 얼음
돼보자고 어른 지키자고 법은

Disco rhythm에 맞춘 춤
Funky한 리듬에 맞춰
점점 음악에 널 맡겨

있잖아 너와 난 환상의 조합
완벽한 조화를 이루며
So pumping, pumping, 나의 가슴이
Jumping, jumping, 뛰어다니지
아름다운 밤 가운데 춤을 춰 (Aw)

Unforgettable, u-unforgettable (Uh-uh)
Unforgettable
잊혀지지 않아 오늘 이순간
Unforgettable, u-unforgettable (Uh-uh)
Unforgettable
Tonight, (Uh-huh) this night (Uh-huh)

Hey, you know what it is? (You know what it is?)
It's time for you and me
함께 맞이한 아침
지금 공기는 so fresh
I wanna love you 'til the sun comes up
You and I, ooh-ooh-ooh

Unforgettable, u-unforgettable (Unforgettable, yeah, yeah)
Unforgettable (Uh)
붉은 불꽃놀이 가득한 이 밤
Unforgettable, u-unforgettable (Oh-oh, yeah, yeah)
Unforgettable
Tonight, (Uh-huh) this night (Uh-huh)

Yeah
This night