Music

We can't imagine Richard Castle and Kate Beckett's first official embrace in the Season 4 finale without the beautifully haunting score composed by Robert Duncan.

For Robert — who has been a member of Castle's music team since the pilot episode — the most important part of his job is making sure he lets the storytelling do its work, allowing the music to be the icing on the cake.

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Curious about the song playing in Castle's Season 4 Finale, "Always"? Check out our music guide, then download the track from iTunes!

Song: "In My Veins" by Andrew Belle

Scene: As Kate Beckett relinquishes her police badge and trudges through the rain, a cap and gown-clad Alexis Castle delivers her graduation speech. A haunting song plays atop the stirring dialogue, as we watch the 18-year-old......

Our friends at CastleTV.net recently caught up with Castle music composer Robert Duncan, who dished some interesting behind-the-scenes secrets about our favorite show.

Robert, a Canada native who has worked on such shows as Buffy, The Unit, and Lie to Me, has been a part of the Castle team since the pilot episode. He single-handedly selected the instruments that would come to define Richard...

Castle star Seamus Dever is one multi-talented dude. Not only can he act, but he can also play the piano and sing. We got a little taste of Seamus's vocal stylings when Jon Huertas posted a behind-the-scenes YouTube clip of the duo belting out an old doo-wop tune.

It's obvious Seamus takes his singing seriously, especially when it comes to karaoke.

"Choosing a karaoke song is tricky. You need...