Blue Steel Railway by writer
http://www.fimfiction.net/story/12066/Blue-Steel-Railway

"Dodge Junction is a foul place, full of fouler people. At least, that's what Sheriff Bismarck wants Applejack to believe. And yet, here, among the dregs of society, Applejack finds an honest soul to help her rid her home town of a fearsome beast - a grizzled old outlaw, desperate for redemption."

Music used includes:
For A Few Dollars More theme (1965) by Ennio Morricone
The Good, the Bad, and the Ugly theme (1966) by Ennio Morricone
O Brother, Where Art Thou? soundtrack (2000) from Mercury Records
Jonah Hex soundtrack (2010) by Mastodon
True Grit soundtrack (2010) by Carter Burwell

http://bamboodog.deviantart.com/art/Meet-Me-On-The-Frontier-260245707

I own nothing in this video.