Lời bài hát Back in the day
Cheoeum bon geu sungan
Nan ij-eul suga eobsjyo
Amu mal eobs-i
Usgiman haessdeon
Geuttae geunal uli
Jeo haes-sal-i tto naelyeojuneyo
Deullyeojuneyo geuttae goun nungil
Naege dahneun eodideun ileohge
Da bich-i doeneyo
Geuttae geudaelamyeon
Al-ayo al-ayo
Ige salang-ilan geol
Geutolog na gidalyeowassdeon geudaen geojyo
Hangeol-eum hangeol-eum
Jogeumssig dagagalgeyo
Deo isang meol-eojiji mayo
Nae gyeot-eseo
Son-e dah-eul deushan
Gakkaun geudaeinde
Mam-eul butjabgo ib-eun mag-assdeon
Geuttae geunal uli
Jeo balam-i tto heutnallineyo
Chaoleuneyo geuttae yeolin miso
Gidalimyeon sigan-i heuleumyeon
Geuttaega olkkayo naege kkom-elado
Al-ayo al-ayo
Ige salang-ilan geol
Geuteulog na gidalyeowasdeon
Geudaen geojyo
Hangeol-eum hangeol-eum
Jogeumssig dagagalgeyo
Deo isang meol-eojiji mayo
Nae mam-eul deul-eojwoyo
Dasi geudael boge doelkkayo
Nan nun-eul gam-ayo
Kkum-eseodo geudaega olkka bwa
Salanghae salanghae
Mam-euloman bulleossdeon
Nae mam-eul ijen geudaeege malhallaeyo
Yeong-wonhi geudaeman
Geudaeman salanghallaeyo
Ileohge geudaeman buleuneun
Nae mam-eul
Deul-eojwoyo
