What folk songs are evaluated by Ban Gu with sad feelings and musical sense?

Ban Gu used the feelings of sadness and joy to evaluate the folk songs of Han Yuefu.

Yuefu Poems is a collection of Yuefu poems compiled by Guo Maoqian, a writer in the Northern Song Dynasty, from ancient times to the Tang and Five Dynasties. Written in the Northern Song Dynasty. This book has 100 volumes, mainly composed of Yuefu poems in the Han, Wei and Tang Dynasties.

According to the different nature of music, the collected works can be divided into twelve categories: Jiao Miao Song, She Yan Song, Xuan Dao Song, Heng Feng Song, Xianghe Song, Qing Shang Song, Dance Song, Qin Ge, Za Song, Modern Style Song, Za Song and Xinle Fu Song.

Each category has a general order, each song has a solution, and the origin, nature and vocal orchestration of the music are explained in detail. It also preserves the contents of many lost works.

Yuefu Poetry Collection is the most complete collection of Yuefu songs in China, which summarizes the ancient Chinese Yuefu songs after the Book of Songs. It is valued by academic circles for solving problems, attracting massive information and assisting detailed examination, and has important reference value for the study of literary history and music history.

Yuefu poetry has always had a great influence in the history of China literature research. In the Yuan Dynasty, Wu Lai was dissatisfied with this book, so he compiled 100 Yuefu Classic on this basis. In the Yuan Dynasty, Zhou Xunheng sorted out Yuefu poems of past dynasties and began to be popular in China. So far, Tang Li has 1200 poems.

Ten Volumes of Ancient Yuefu compiled by Zuo Keming in Yuan Dynasty recorded Yuefu before Tang Dynasty, and its style is the same as Yuefu Poetry Collection. In Ming Dynasty, Wu Mianxue compiled eighteen volumes of Yuefu in Tang Dynasty, which were basically taken from Yuefu poems in early Tang Dynasty.

Although it is difficult to refute Yuefu poems, Gu Le Yuan compiled by Mei Dingzuo in Ming Dynasty benefited a lot from the actual compilation of his books. Feng Weiner collected poems before the Ming Dynasty and Tang Dynasty as a collection of ancient poems, and almost all Yuefu poems in previous dynasties came from Yuefu Poetry Collection.