Actually this music grows on me each time I hear it. Of course it is always a pleasure to look at the beautiful Stana Katic playing Kate Beckett. She does blushes, embarrassment , love looks etc better than anyone I have ever seen. Nathan is pretty good at it too.
Castle and Beckett look like potential lovers. The music the series uses is pretty good too.
This series is about Beckett and Castle solving murders BUT also the relationship between Beckett and Castle. They do act like lovers or almost lovers. I could becoming a born again romantic
As a special bonus here is Castle with music by Andrew Belle who sounds coldplayish.