(Chinese: 李延年; pinyin: Lǐ Yánnián, died 82 BC) was a Chinese musician during the Han Dynasty
. Born into a musical family, he became a court musician during Emperor Wu’s reign.
His most famous composition was the song Jiarenqu (literally, The Beauty Song), describing a lady with exceptional beauty. Upon hearing this song, the Emperor did not believe there could be such woman on earth, but his sister Princess Pingyang mentioned Li has a younger sister who could match the description, so Emperor Wu took Li’s sister Li Furen (李夫人) as a concubine. Li Yannian himself allegedly had a homosexual relationship with Emperor Wu. When Emperor re-established the Imperial Music Bureau, Li Yannian was appointed the Chief Musician.
More Detail: http://en.wikipedia.org/wiki/Li_Yannian_(musician)