By Nathan Poppe Entertainment Writer npoppe@oklahoman.comGUTHRIE — Bluegrass is a language of its own. Renowned fiddle player Byron Berline realized that after helping organize the Oklahoma International Bluegrass Festival for 20 years. Players from around the world gather at the festival's Guthrie campgrounds to collaborate and share an appreciation for the American-grown genre.Read more on NewsOK.com