may ra viet cong doi moi, nen moi cho phep ca si o mien bac ca nhung bai hat truoc day viet cong cho la lai can mat goc,uy mi, nhung bay gio chinh nhung bai hat do lai dua ten tuoi cua cac ca si ma co nguoi me hay cha truoc day la can bo van cong,cung chinh ho da co mot thoi nguyen rua am nhac trong mien nam. khong biet bay gio ho cam thay nhuc khong nhi?