KOREANS, I NEED YOUR HELP!?

[thedecider1]

http://www.youtube.com/watch?v=Q2P1DywSKWg
^^GO THERE!
It's from the movie "He was Cool" (korean movie)
Can someone PLEASE tell me the song she sings for karaoke!?!? please and thank you!
^.^

 

[George]

Thought this would be a maths question..