Xu Song has a high status in Haidie. He is the music director of Haidie Music Company.

Xu Song (Vae), born on May 14, 1986 in Hefei, Anhui Province, is a male pop singer and original musician in Mainland China. He is currently the music manager of Haidie Music Company (now Taihe Music Group) Director, graduated from Anhui Medical University.

In early 2006, Xu Song was a sophomore student at Anhui Medical University. In his spare time, he relied on the skills he had learned from piano and classical music since childhood to teach himself composition, arrangement, and mixing. Then he began to create some music works. These musical works were posted on his personal website under the pseudonym "Vae", which attracted the attention of netizens.

On January 6, 2010, the second independently created album "Xunwu Enlightenment" was published and released. The song "Gray Avatar" in the album won the top ten golden songs of the 4th Tencent Starlight Ceremony; April , at the invitation of Sohu, he composed and sang the theme song "Half City of Smoke and Sand" for the online game "Dragon Part 2"; in August, at the invitation of Huayi Music Company, he sang the duet song "No Makeup" with singer He Manting; in October, as a friend Jinsha composed "Your Mouth" and "Lovesickness", which were included in Jinsha's "Xingyue Myth" album.

In March 2011, Xu Song signed a contract with Haidie Music; on April 1, he released his third solo album "Socera Has No Bottom". The album is more refined in style and concept. The album sold more than 230,000 copies. At the same time, the album won the 9th Asia-Pacific Music Chart's Most Popular New Singer Award and topped the digital album sales chart. In September, he composed and sang the theme song "Dragon Ba" for the online game "Dragon Ba Bu 3". "Enemy of the Department"; on October 25, he held his first solo concert in Beijing; on December 31, he attended Jiangsu Satellite TV's New Year's Eve party as a guest performer.