Wong Pi Mai Man is music played to accompany the Sen ceremony and the band is assembled woodwind instruments only. The music is played along with Mor Mod’s chanting while conducting the Sen ceremony. Wong Pi Mai Man is used in the ceremony as a means to contact the spirits in the Sen ceremony. Its roles and functions serve the people of Lao Song in boosting mental confidence. On the social level, Wong Pi Mai Man is used as a symbol of social hierarchy of the Lao Song people and it is a means to instill moral codes and to instill peace in the society through a common belief in spirits. Nowadays, however, the roles of Wong Pi Mai Man and Sen ceremony have been lessened due to social changes; the Loa Song people have adopted much of townspeople culture and values in their daily life and Wong Pi Mai Man is the music played to accompany the rites. It cannot be played in everyday life and the musicians have to be of a special status-“Mor Mod” Thus, in the future, Wong Pi Mai Man might not remain in Lao Song society.