The is a popular folk song and dance performed at matsuri (and occasionally Undokai sports days) in Gunma and Tochigi, Japan. It consists of dancers with broad hats called kasa going in a counter clockwise circle around a mikoshi. The dance is very energetic and ends with everyone throwing their hats in the air. The "Yagi" (å «æ¨, literally "eight trees") came from , one of the post stations on the Nikkà  Reiheishi Kaidà  Road, and is not to be confused with the "yagi" (å±±ç¾Â, goat).
The song was first sung by Seizaburo Maruyama, who was from the town of Asakura (currently Ashikaga, Tochigi) and known as "Seizo Asakura", and popularized by Gentaro Watanabe "Genta Horigome".
The original form of the song is said to be , which originated in Niigata. It was later arranged and spread along the Nikkà  Reiheishi Kaidà  Road by craftmen and traveling entertainers such as Goze. Eventually one around Yagi-shuku became the most popular, where Watanabe and others developed today's form.