 "Lương Sơn Bá-Chúc Anh Đài" is based on the Chinese legend of butterfly lovers.In "Cải lương tuồng cổ", "Hồ Quảng" a kind of Chinese opera may be mixed.Hence, some "Cải lương tuồng cổ" may be called "Cải lương Hồ Quảng", which is more like a musical.