Winston Marshall, Ben Lovett, Ted Dwane, Marcus Mumford
This Sept. 5, 2012 photo shows the band Mumford and Sons, fromleft, Ben Lovett, Winston Marshall, Ted Dwane and Marcus Mumford, in Franklin, Tenn. Emmylou Harris, an iconic singer and member of the Country Music Hall of Fame, and Mumford & Sons, platinum-selling lads from London who have sparked a folk rock resurgence, are joining together to explore their shared love of high harmony, sad songs and, yes, the oft-belittled banjo on an episode of “CMT Crossroads” on Thursday, Sept. 27. (AP Photo/Mark Humphrey)