He grew up in smallville, so logically it has to be a country song. So I'll guess "the gambler" or "ring of fire"
Just out of curiosity, does the UK have any kind of country music scene going on over there? In other words, do you guys have your own country singers? Or for the (likely very few) people that listen to that kind of music, do they just listen to American acts?
I actually do listen to country but most of it comes from over there. I won't say all of it just in case but I can't think of any English country acts.