Xoan singing is a vocal art of villages in the ancestral land of Phu Tho and is often performed in front of the communal house during village festivals in spring. 

It is associated with the stories about the era of the Hung King’s national construction. The original villages with Xoan-singing are ancient villages located in the centre of the old country of Van Lang, present-day Viet Tri City in Phu Tho Province. These villages include An Thai, Phu Duc, Kim Doi and Thet in Kim Duc and Phuong Lau Communes (Viet Tri City, Phu Tho province). This art has retained many ancient cultural features from the time when the Hung Kings built the country.

Xoan singing has some similarities with the lullaby. Many of the songs are about love, but it is also a kind of folk music that praises a village genie. 

There are many forms including the duet and group singing accompanied by several kinds of dances.

Xoan festivals are often held in spring in village temples. On the15th day of the 1st lunar month, these traditional songs are performed at the Hung Temple festival.

Source: Internet