Answer: (1) In terms of band organization, Sasuke belongs to. Class performance, small scale, 3 ~ 12 dancers. Li Bei Ji is one of the ancient dances in China. "Banquet in the temple, stand and play" ("New Tang Book Rites and Music"). Perform under the hall (courtyard, square). The performance was grand and spectacular. Dancers range from 180 to 64. (2) In terms of musical style, the geisha in the left part danced elegantly, with exquisite costumes and exquisite skills, accompanied by fine music of silk and bamboo. Generally, it is performed at court banquets and court meetings, but it is not a complete set of performances like nine songs and ten songs, but is designated by the emperor, and only a few of them are performed at a time. Except for Taiping Music, all the other ministries in The Rites of Rites praise the harmony of the emperor. Dance inherits and absorbs the traditions and folk forms of the previous generation. In the late Tang Dynasty, Li Beiji performed acrobatics. The poem "Rebecca" says: "Rebecca, beating drums and flute, dancing double swords, making seven pills, winding giant ropes and lowering long poles." The technical level of the performance program Li Bei Ji is not as high as that of Satay Taj. (3) From the position in court music, the left geisha and the left geisha are divided according to the needs of performance and the professional level of performers, with the left geisha playing in the class and the inner geisha playing in the class. The station is cheap, the seat is expensive, and the grades are clear. The lowest is the gagaku performer.