What's the title of this korean rap song ? =)?

Question

The lyrics says " screams echo away as waves in the ocean . A beautiful youth , beautiful memories.. " I was watching Love of South and North Movie ., and there is a part when Kim Sa-Rang was singing this , http://ca.youtube.com/watch?v=kDYWCU0xJXs&feature=related

<--- here's the part of the movie , it's at 7:30 , help please ? =) Thanks !

Answer 1

the song is 챔피언(champion) by 싸이(Psy). The notebook has the lyrics and stuff. The volume was pretty soft. :]

Answer 2

i can barely hear the song