Where can I download a certain version of "don't fence me in?"?

So I saw a commercial for the nokia astound a few minutes ago and it had an interesting version of "don't fence me in," that I can't find on iTunes. It's the version where one man sings part of it and then multiple people join in during the "don't fence me in" part. It sounds like it was sung in a saloon if that helps. Thanks in advance!