Why are you so good?

He admitted himself!

and see what others comments:

homme fatale!

 

As they all say, JDH performed the song very good! To me, who don't understand old Korean song..come to like the song after this performance ^^;
That's why I've never tired to watch and listen to his performance in Immortal Song 2!
I also recommend performance of Kim Bada and Baek JiYoung.  Baek JiYoung is really queen of ballad song! Yes, she's that good! She made an old song like her own song like some nowadays drama ost xD