La, la, la-la-la, la, la, la, la La, la, la-la-la, la (hey, hey) La, la, la-la-la, la, la, la, la, la gi-eoghani byeol-i yunanhi keuge tteossdeon geunal sangsangdo mos haessji uliga mannage doel jul-i-ya naega dagagado nollaji ma ani-ya sasil nollajwoss-eumyeon hae puleunbich-eulo muldeulge doel geo-ya uliga mandeul happy virus nal kkeonaen byeolbich geu yeop-e neo-kkaji wanbyeoghan sungan neul geudaelo iss-eo jwo nan byeonchi anh-a bombalam bol ttae uli dasi manna i jali i sigan hyanggi-kkajido yeong-wonhi ganjighalge gi-eoghae Happy, happy birthday La, la, la-la-la, la, la, la, la La, la, la-la-la, la (hey, hey) La, la, la-la-la, la, la, la, la, la Happy birthday nega ogi jeon halu jong-il nan kkumman kku-eossji ijeneun junbidwaess-eo moduleul nollage hal geo-ya naega dagagado nollaji ma ani-ya sasil nollajwoss-eumyeon hae puleunbich-eulo muldeulge doel geo-ya uliga mandeul happy virus Oh, pyeolchyeojineun ye-ppeun kkoch-ipkkaji wanbyeoghan sungan neul geudaelo iss-eo jwo nan byeonchi anh-a bombalam bol ttae uli dasi manna i jali i sigan hyanggi-kkajido yeong-wonhi ganjighalge gi-eoghae Happy, happy birthday (hey) La, la, la-la-la, la, la, la, la La, la, la-la-la, la (hey, hey) La, la, la-la-la, la, la, la, la, la Happy birthday Happy, happy birthday Happy birthday Happy, happy birthday Happy birthday bombalam bol ttae uli dasi manna i jali i sigan hyanggi-kkajido yeong-wonhi ganjighalge gi-eoghae Happy, happy birthday (hey) La, la, la-la-la, la, la, la, la La, la, la-la-la, la (hey, hey) La, la, la-la-la, la, la, la, la, la Happy birthday