Folk instrumentation is becoming more popular these days, probably thanks in part to bands like Mumford & Sons. I can't say I'm complaining; more banjo and mandolin is always good in my book.
Apparently Thunder Dash agrees with me, because he's shared a great version of the Title Theme for mandolin. You can listen to it over on Soundcloud. Then check out the sheet music and tab, so you can play it yourself! Enjoy the mandolin-y goodness.
Thanks, Thunder Dash!