If you are talking about Mason's birth, I belive it is "Haunted by the Sea World".
The tune played in the background, in the game of thrones season 3, episode 9, during the bedding ceremony when they take the bride and groom is the Song of Ice and Fire.
In the "Blue Bloods" episode titled "Insult to Injury," the character of the blonde bike messenger is played by actress Christine Woods. The episode aired during the show's eighth season and revolves around a storyline involving a hit-and-run incident. Woods' character adds a unique perspective to the unfolding narrative within the episode.
It's not a named song. It's just music composed by either Walter Murphy or Ron Jones for the episode.
Kellan Lutz played in an episode of Both CSI and CSI New York
Smallville Season 1, Episode 16 "Stray"
in the episode aliyah 6x25. the part when they get off the plane
In the episode entitled "My Blind Date" (Season 1 Episode 12) the song "Easy Tonight" by Five for Fighting is played.
Every Heart
The song played at the end of the episode is Breathlessby The Corrs.The song played during the opening credits is Give Me A Reason by The Corrs.
At the wedding the first dance song is called Picture of you- North :)
Untouched and Take Me On the Floor =]
The Times They Are A-Changin'
Wonderwall
"Hook" by Blues Traveler is played during this episode, as well as "Run-Around" during the credits. I don't know what the song is that Dan sings in.
seejai the nite
Good Ol' Fashion Nightmare by Matt & Kim
Fleet Foxes Montezuma