What is the name of this 2008 South Korean film based on a novel that was written by Guiyeoni?
Guiyeoni: Guiyeoni (born 1985) is the pen name of internet novelist Lee Yoon-sae. Guiyeoni:  Since then, one of her other books, "Do Re Mi Fa So La Ti Do", has become a film starring Jang Keun-suk. Do Re Mi Fa So La Ti Do (film): Do Re Mi Fa So La Ti Do () is a 2008 South Korean film based on the internet novel of the same title by Guiyeoni.
Do Re Mi Fa So La Ti Do