Carrie Underwood, Miranda Lambert, Blake Shelton Lead Big Barrel Country Festival

Loretta Lynn, Merle Haggard and dozens more to perform at the Woodlands of Dover International Speedway in June

Miranda Lambert and Carrie Underwood perform their "Somethin' Bad" duet in Nashville. Credit: Frederick Breedon IV/WireImage

Much like Stagecoach following Coachella at the same California venue, the East Coast is getting a huge country music festival that will act as a cousin to an annual rock extravaganza. Organizers of the Firefly Festival in Dover, Delaware — this year headlined by Foo Fighters, Outkast and Jack Johnson — have announced the 2015 Big Barrel Country Music Festival. It will take place at the Woodlands of Dover International Speedway on June 26—28, the weekend after Firefly.

While the 2015 Firefly lineup is still under lock and key, the Big Barrel headliners were announced today: Miranda Lambert, Blake Shelton and Carrie Underwood. More than 40 other big Nashville names are also on the bill, including Gary Allan, Merle Haggard, Loretta Lynn and Jake Owen. Three-day general admission passes are $99 and are on sale now at BigBarrelFestival.com.

Lambert's appearance comes in the middle of her 2015 Certified Platinum Tour, which features opener Justin Moore on all dates, with Sunny Sweeney, Ashley Monroe, Danielle Bradbery and Raelyn in select cities. Husband Blake Shelton is now on a three-month break, according to his official tour schedule, with The Voice having wrapped this week (with his fourth win). He'll gas up the tour bus again in late March. Underwood has only a handful of 2015 dates set at this point, as she prepares to welcome her first child this spring.

Lambert and Shelton are also Stagecoach 2015 headliners, alongside Tim McGraw.