Which emperor was a musician in the Tang Dynasty?

Li Longji was a musician in the Tang Dynasty. In the Song Dynasty, the golden body for longevity was a calligraphy font created by Song Huizong, Evonne (1082- 1 135), the Northern Song Emperor Hui Zong and the artist emperor Evonne. He devoted himself to painting and calligraphy all day, promoted and advocated the construction and development of the Song Dynasty Painting Academy, and the arrangement and preservation of painting and calligraphy art and ancient art. He can be called the emperor who loves painters instead of mountains and rivers.