The rich, folky music of the Celtic peoples is known far and wide for its sprawling melodies, upbeat rhythms and compelling stories. Tracks like “The Kesh Jig...” and “The Kincora Jig/Behind the Haystack” make it hard to stay in your seat, while the popular ballad “Betsy Bell and Mary Gray” paints a romantic story that's easy to get swept up in. Celtic tunes often feature riveting performances on the fiddle (“Boil the Breakfast Early”) and guitar (“Arthur McBride”); this improvisational, often cheerful music—reels, in particular—had a huge impact on bluegrass and country.