Members of My Morning Jacket, from left, Bo Koster, Carl Broemel, Jim James, Tom Blankenship and Patrick Hallahan pose for a photograph in Louisville, Ky (AP Photo/Ed Reinke).

Rodriguez performs at the Newport Folk Festival in Newport (AP Photo/Joe Giblin).

Jackson Browne performs a song with Sara Watkins at the Newport Folk Festival (AP Photo/Joe Giblin).

Dallas Green performs as City and Colour at the Newport Folk Festival (AP Photo/Joe Giblin).

The Guthrie Family Reunion performs at the Newport Folk Festival (AP Photo/Joe Giblin).

Taylor Goldsmith of Dawes performs at the Newport Folk Festival (AP Photo/Joe Giblin).

Patty Griffin performs at the Newport Folk Festival (AP Photo/Joe Giblin).

Israel Nebeker and Kati Claborn of Blind Pilot perform at the Newport Folk Festival (AP Photo/Joe Giblin).

Kati Claborn and Ryan Dobrowski of Blind Pilot perform at the Newport Folk Festival in Newport (AP Photo/Joe Giblin).

Brittany Howard of Alalbama Shakes performs at the Newport Folk Festival (AP Photo/Joe Giblin).

Suzanne Santo of Honey Honey performs at the Newport Folk Festival in Newport (AP Photo/Joe Giblin).

John McCauley performs with his band Deer Tick at the Newport Folk Festival (AP Photo/Joe Giblin).

Johnny Fritz, also known as Johnny Corndawg performs at the Newport Folk Festival (AP Photo/Joe Giblin).