Railbird Festival, the Lexington-based, world-class music festival produced by AC Entertainment and Lexington entrepreneur David Helmers, is proud to present its 2020 lineup. Grammy Award-winning artists topping the weekend’s bill include Americana standout Jason Isbell & The 400 Unit and singer-songwriter Maren Morris. The festival will return to the Grounds at Keeneland, August 22-23, 2020. Additional acts include The Head and the Heart, Young the Giant, The Decemberists, Tanya Tucker, Trampled By Turtles, Colter Wall, Whiskey Meyers, and more. More than 30 artists will perform across three stages during the two-day festival. General Admission (GA) and VIP weekend passes will be available to the public beginning Friday, February 21 at 10 a.m. ET via RailbirdFest.com, with a limited quantity…