Dolly Parton has been added to the lineup for the 14th annual MerleFest, set for April 26 - 29 in Wilkesboro, N.C. The lineup features hundreds of bluegrass, folk, country and Americana musicians including Doc Watson, Earl Scruggs, Marty Stuart, David Grisman, Mary Chapin Carpenter, Bela Fleck & the Flecktones, Sam Bush, Ricky Skaggs, Vassar Clements, the Del McCoury Band, Rhonda Vincent, Dan Tyminski, Beth Nielsen Chapman, Peter Rowan, Jerry Douglas, Tony Rice, Chris Hillman, Rory Block, Tim O'Brien and the Lonesome River Band. The festival originated as a tribute to Watson's son, Merle Watson, who died in 1985.