Ani di Franco

Emmylou Harris, pictured at “Emmylou Harris: Songbird’s Flight,” a new exhibit at Country Music Hall of Fame and Museum in Nashville, again headlines the 18th Hardly Strictly Bluegrass on Sunday. (Courtesy Jason Kempin/Getty Images/ Country Music Hall of Fame and Museum)

Mountains of music at 18th Hardly Strictly Bluegrass

Even though the 2018 Hardly Strictly Bluegrass lineup is missing some favorite…