Dá hai is an art form performed on the folk stage by Nùng people in the eastern districts of the northern border. In the 1960s and 1970s, Dá hai drama had a strong development and many groups performing this kind of drama appeared. Dá hai drama had turned into a Nùng style from a form of puppetry Mộc Thầu Hý, a popular art form at village fairs in Cao Bằng Dá hai drama performs ancient stories, such as Phạm Tải - Ngọc Hoa, Hoa Mộc Lan tòng quân (Hoa Mộc Lan joined the army), Hoa phù dung, Tống Chân - Cúc Hoa, Lương Sơn Bá - Chúc Anh Đài, etc. Dá hai has many tunes, depending on content, themes, and details of characters that performers use—Sai va páo (playful, excited), sli páo, pìn táo (lyrical, romantic), cù táo (sad and mourning). The nhị (two-string fiddle) is always played as accompaniment in Dá hai. On a larger stage, Dá hai drama includes the accompaniment of a small orchestra consisting of nhị bố (two-string fiddle with a bass sound), nhị mẹ (two-string fiddle with delicate sound), cymbal, bamboo flute, and small drum. This track has excerpts of characters who, despite broken love affair, should not to be too sad but hope for a better future.

Since ancient times, the Nùng ethnic minority regarded folksongs as confidence, a means of communication and love expressions, and the vibration of the heart. In singing, they can express their thoughts and feelings at anytime and anywhere. Hò khuyên is sung to the tune of Hèo Phươn, a typical Nùng An folk song. Hèo Phươn is sung based on a pair of poems, each pair has two sentences and each sentence has ten words. When singing, each part for men or women has two people— one bass voice and one high voice. They sing in harmonious and romantic parts. Words of the ancient songs are full of overflowing, profound, lyrical, yearning, and loving words.

Uzbek people wrap their babies in cloth and lay them in cradles for bedtime. This lullaby is sung while rocking the cradle to put the child to sleep. It is a very lyrical and beautiful song.

Sa lệch chênh belongs to the Sa lệch melody system in Chèo. This melody is lyrical. In addition, the Sa lệch melody system consists of Sa lệch bằng and Sa lệch xếp. The Sa lệch melodies often have a common feature, syncopation, which starts as soon as the beginning of the singing sentence. This act introduces the Sa lệch chênh melody through the solo of the nhị two-string fiddle.

This is one of the most lyrical songs with the lyrics sending moving messages. Its lyrics are often poetic sentences with seven or eight words. They are sometimes the six-eight-word verses with the plaintive content. Its tune is clear and calm.