Almost 300 artists will descend upon Nashville for the 17th annual AmericanaFest on Sept. 12–17. Today (June 28), the Americana Music Association announced the second round of artists—84 in total—who are slated to perform during the six-day event, including Hayes Carll, Amanda Shires, Lori McKenna, Drive-By Truckers, David Ramirez, The Wood Brothers and more. Previously…