Seunghee, Yujin, Seungyeon
Sorn, Yeeun, Elkie, Eunbin
beolsseo myeot beonjae sae oseul garaipgo
hwajangdo haebogo
cheot insamareul sudo eopshi dwenwedaga
eosaekan useumdeulman
sujubeun nae maeum
ajigeun jogeum seotuljineun mollado
eorinaicheoreom deultteun
nae maeumi deullinayo
Oh my boy
Day by day oh day by day
aju jakjiman neul neowa hamkke kkeonael gieok
han jul han jul jeogeo naeryeoganeun dulmane
aju bimilseureoun geu iyagideul
Lararalala lararalala
nae maeume gadeuk neoreul dalmeun norae
Lararalala lararalala
nareul bureuneun neoye ipsure
eorin shijeol sokkupjangnan gachi
neowa naega maeil manna
dulmane shigan geurae eoseo wa
mweo meogeulkka uri yeonghwa bolkka
uri sonjapgo gaja na tteollineun geo anya
geunyang mweol haedo joa neowa hamkkejana
maeil bam honja kkumkkuneun Date oh
gwaenhi na honja seollegenne naeildo
tteollineun nae maeum
ajigeun uri eosaekan deut boyeodo
eorinaicheoreom deultteun
nae maeumi deullinayo
Oh my boy
Day by day oh day by day
aju jakjiman neul neowa hamkke kkeonael gieok
han jul han jul jeogeo naeryeoganeun dulmane
aju bimilseureoun geu iyagideul
hangsang geotteon i golmogi
jeulgyeo deutteon noraedeuri
machi cheoeumin deut modeun geoshi saeropge
dashi taeeonan deut nasseon gibun eotteokae
neoegeman deullyeojullae
amudo moreuge gamchweowatteon nae ane
aju bimilseureoun geu iyagideul
Day by day oh day by day
aju jakjiman neul neowa hamkke kkeonael gieok
han jul han jul jeogeo naeryeoganeun dulmane
aju bimilseureoun geu iyagideul
Lararalala lararalala
nae maeume gadeuk neoreul dalmeun norae
Lararalala lararalala
nareul bureuneun neoye ipsure
Day by day neowa hamkke
Day by day
