The first five episodes were boring. Firts episode was okay, but then the story got weird. I didn't like the main actor, he was just so annoying and unrealistic. But i liked the other characters so i kept watching the show. Thank god i didn't dropped it, because after the sixth episode the story changed interesting and more connected. The character changed and got more adultlike. I think that the actors did pretty good job. Well the main actors weren't that good, but all the supporting actors were incredible and so funny. The best was Kang Min Hyuk who played the drummer Yeo Joon Hee. He was so cute and funny. And Woo Ri acted realistically the anorexia girl. And what else can you expect from music, when the main actors are Park Shin Hye and Jung Yong Hwa. I'm still not that familiar with korean music, but i'm really starting to like it. But the traditional music was somehow odd... The ending left few question without answers and i think they could have done one more episode and explain some matters. Anyway i liked this show. It wasn't perfect, but i would recommend this to all of you who like pretty cheesy romance with some plot twist. If you like action and surprises, this isn't your drama.