Indie bluegrass IBMA Has A New Leader, Announces New Festival Headliners By Jeff Tiberii, David Brower & Rebecca Martinez • Jun 19, 2015 Rebecca Martinez / WUNC The International Bluegrass Music Association has announced the lineup of artists that will play the World of Bluegrass festival this fall. Allison Krauss and Union Station Featuring Jerry Douglas will headline the event. It'll be held in Raleigh for the second year in a row. The Sam Bush band will also perform. Paul Schiminger is the new Executive Director of the IBMA. Schiminger says says Raleigh was very accommodating to festival goers last year.