The background music of Uncle Paul on Douyin is called "Looking Back Again". The song "Looking Back Again" was sung by Taiwanese female singer Su Rui. It was a popular song in the late 1980s and early 1990s. It was once popular in the streets and alleys and had a high singing rate. It was covered by many singers such as Li Yijun and Jiang Yuheng. Among them, Jiang Yuheng The version is the most popular.