Approximately 80% of Kagami-machi is land formed by reclamation, and reclamation has been repeated many times. This includes the construction of Nanahyaku-cho Shinchi in 1821, the largest of such reclamation works, requiring gruelling labor from migrant workers. "Ozaya Meisyo" is a labor song that was born under such circumstances. The tragic love story of Amura-Amakusa-born daughter “Okiku-san” and labor foreman "Daibadon (Rihei)" is woven into the dance with an interesting musical accompaniment to a light rhythm. This performance continued in other areas involved in the reclamation work along the Yashiro and Ariake Sea coasts with some differences in lyrics in each area. Elementary school students have preserved and handed down the tradition in the Kakihara district.