LaLaLa...LaLaLa...Gunugurado jalmotggi wuh buhrinDanchu hana chuhrumUtgal lyuh buhri nun nal itgehjoNan mitgo it sut jiman sol jikHan ma um weh myun han duhMuluh juh ganun dwit mo soopBomyuh ahmoo mal halsoo upsuhjoJigum e dero jun hago shipuhJamgyuh itdun maum ehyul sweh gaE gasum sokeh bitnago itsuh yoDuh wook gang hage jikigo shipuh Sel soodo upshi man eun chuwukulE uh joogo itnun e room eunJust a Key of Heart(I believe love to heart)(I believe love to heart)Mian hadago e yagi handaMyun al soo it suhdoHonja suh mal hal soon upgehjoGu dero jigum nawah gattunSenggak hago itnun guh joUn myung e woo ril buru nikaGude rul hyanghae gahnun kulJigum e dero jun hago shipuhJamgyuh itdun maum eh yul sweh gaE gasum sokeh bit nago it suh yoNunul gamunche, gido halkke YoDoogun guhrinun e maum modooGude eh gaejunhae jidorokJust a Key of HeartWoo yunhee gude mannan kijukdo eSesanghae taeuh nana uy midoJuhmada suhro gasumhae saegincheMang sullim upshi !#)! atdunGudewa naman uy jakeun yaeghee nunKutnaji anke hago shipuhJust a Key of HeartLaLaLa...LaLaLa...