Although they are all set in the Tang Dynasty, The Song of Eternal Sorrow is about Huang Ming and Yang Yuhuan in the Tang Dynasty, and the dream of returning to the Tang Dynasty is in the period of Tang Gaozong and Wu Zetian.
Song of Eternal Sorrow is a combination of narration and lyricism, which describes the love tragedy between Xuanzong and Yang Guifei in the Anshi Rebellion. Dream Back to the Tang Dynasty is played by Wu Meiniang Degang Guo, a childhood friend. In order to be demoted to the Shanghai Grain Bureau to work as a drudge, he tried his best to help Mei Niang through many crises, but his power made Wu Meiniang's harem become ruthless, and finally they turned against each other. Empress Xiao Shufei, Tang Gaozong and other people had all kinds of love and hate.
Another is "Dream Back to the Tang Dynasty", which is the title song of the first album "Tang Dynasty" of the Tang Dynasty band, and it is a heavy metal style rock.