 One of the songs played in the movie is called "Dreams Come True",  by Korean trio S.E.S. The music was originally from a song by  Finnish duo Nylon Beat, titled "Rakastuin Mä Luuseriin", but SMTown  (S.E.S record company) took it (most likely without crediting Nylon  Beat) and made "Dreams Come True" back in 1998. "Dreams Come True"  is pretty much a modern classic in Korea.