Ahsoken Farewell

I love this piece of music, Ashoken Farewell https://en.wikipedia.org/wiki/Ashokan_Farewell, used in the Ken Burns documentary The Civil War http://www.pbs.org/kenburns/civil-war/.  I have a version of this on a CD by The Prairie Heirs of the Palo Duro http://amarillo.com/stories/050699/ent_briefs.shtml#.Ve-j_KTlu1s.  I do not believe that this group is still in existence. I really enjoy the music on their CD and find Ashokan Farewell to be very haunting.  When I heard this piece, I thought it was a traditional piece, not one written in 1982. It is beautiful music.  Very evocative.