Do you want to ask "What song is the prelude?" "Illusionary Daytime".

1. Also known as "Huan Daydream", sung by Shirfine and included in the album "Endless Daydream".

2. "Illusionary Daytime" is a piece of pure music.

3. Shirfine, also known as Shirley Guo, has a master's degree in animation and is an independent musician, animator, and multimedia artist currently living in Los Angeles. He has published the work "llusionaryDaytime".