Okay this Kdrama is seriously underrated. Shin Hye Sun is absolutely brilliant in this show, I haven't seen any of her other work, but she nailed this character to the point. Her expressions are captivating, her voice modulation when she's angry to emotional to crying to happy to calling out Dan, is terrific.
Myung Soo or L is below average in first 9-10 episodes, he keeps making dumb stupid faces and nothing else, also felt like his character was not well written, but he picks it up a notch in the last 4-5 episodes and he's probably the reason the show wasn't top rated, replace him with someone like Kim soo hyun or Lee seung gi and this show would have topped the ratings.
Coming to the show, the OST is good, Pray is a lovely track, loved it, but they kinda overused it, although I won't complain much on that because I love the song. Other tracks were beautiful too. The ballet is done nicely, didn't feel like "not their cup of tea", and seemed to be done very professionally.
As a non korean, not all but most of the Korean dramas feels a little a stretched out unnecessarily, the 16 episodes season usually can be wrapped up in 10-12 episodes, and the 20 episodes season can be finished easily in 14-16 episodes, but they're stretched out mostly. This is one of the rare shows that never felt that it's being stretched out. Deserved 16 episodes.
And the last, the love story is beautiful, developed nicely, no unnecessary breakups and forced love triangles for both lead male- female characters. A lot of credit has to be given to Shin hye sun, she carried the show throughout.
A must watch show if you love Kdramas and love stories.