Recently in Japan, this drama has been repeated to be broadcasted in Japanese several TV channels.
Almost every day, we can see this drama in our TV.
So, I have recollected this OST which I bought several years ago.
This is a Japanese version OST, and we can listen opening parts of all pieces in this site.
I like these very beautiful music. Also, this OST has a very good reputation in Japan.
However, unfortunately, there are no Mr. Cho Seung-Woo's singing and no his pictures on the jacket....
Here are some main pieces in this OST. (I have found the audio sources.)
Three of them, a Japanese singer covered. Here is a motion picture.
I enjoy both the drama and music very much again recently.
By the way, becauae of the repeated broadcasting of this drama, Japanese new Mr. Cho Seung-Woo's fans have increasing and increasing currently.
* The related Japanese article.