Hai Die admitted that Xu Song was the music director. Xu Song signed with Haidie in 2011 and later became the music director due to his outstanding ability. The music director's status in the company is relatively high. There is only one music director in a record company. His job is to supervise the quality of his records and is also in charge of the artistic style of the company's records. As a music director, you must not only have professional knowledge in the music profession, but also have certain management and communication skills. Xu Song's qualification for this position is also the company's recognition of his ability.

Xu Song's personal evaluation

Xu Song's special way of singing directly from the heart and crisply has surprised and moved many people. His retro flavor is still engraved with a strong flavor of Xu's love songs. The sentimental but not hurtful singing style shows a self that is both emotional and rational. While more and more musicians are turning to variety shows to promote themselves and maintain exposure, Xu Song remains true to himself, always putting his work first, immersing himself in creation and studying carefully. Xu Song's music has a poetic quality that is unique to Chinese music.