Railworks America

Hey everyone.I was watching a video on Modern Warfare Three, and right before the end advertisement, there was a song I have been looking for for ages.
http://www.youtube.com/watch?v=WkcosHGFk4M

The song goes from 4:20 to about 4:58. I have looked all over for it, but I have found no results. Does anyone here know the name of this song?

Thanks,
Noel.

Song
Call of Duty MW3 End Credits.

Album
Call of Duty MW3 Soundtrack

Here's you a real good song.

Makes me think of the old west.

http://www.youtube.com/watch?v=Hwcd8grt5Dc

Thanks to both of you.

The title displayed on the video is confusing... this song is actually "Lux Aeterna" by Clint Mansell for the movie "Requiem for a dream".
This is Ray Ventura's "Ça vaut mieux que d'attraper la scarlatine", and there are notable differences for the trained ear.

Sorry for the bump, but I need help. Again.

https://www.youtube.com/watch?v=7aJVooOrvM8

From 8:05 to the end of the video.

Thanks,
Noel.

Album: North of the Border...A Salute to Scotland

Band: The Sign Posters

Song: Will Ye No' Come Back Again

Thanks NYWhiskey.