You should watch this if you love Kang Min Hyuk (drummer of CN Blue). He stole the spotlight, at least for me. Park Shin Hye has always been a favorite and yet again she plays the happy-go-lucky-bright-outgoing girl really well.Jung Yong Hwa might be liked by many but the coldness that he played in Heartstrings was a little too much at the start and calmed out a little as the drama progressed. So, I was not quite impressed with his acting. The story was a decent one. Not a jewel that you'd preserve or a 'out of box' memory. Also, at times it got a little slow. But the humour is satisfying. I liked Gyu Won's grandfather as well. :P Music is the amazing part of the drama. Modern or traditional, I liked both genre OST. Look out for some really quirky tracks that you'd like. Scenes such as competitions in the university are actually quite good. In the middle of the series, I started feeling as if Park Shin Hye was a gayageum artist rather than an actress. Also I liked her neutral, light wardrobe. Re watch for me is 5 because I have mixed feeling for this drama. Whoever liked it would wanna watch it continuously. Overall, for me its a one time serve on the plate that made me full.