Chris Willman Senior Music Writer and Chief Music CriticThe top of the bill at the forthcoming Pilgrimage Festival in Tennessee looks a little like a reprise of the recent Grammy Awards telecast, with Chris Stapleton, Brandi Carlile and Grammy king Jon Batiste all set to perform this September.From there, the festival takes a more decided skew toward Americana than it has in past years, although it also leans into other genres. The Avett Brothers are also among the headliners, on a lineup that includes Lake Street Dive, Celisse, Elle King, Dawes, Adia Victoria, Marty Stuart, Molly Tuttle, Butch Walker and Trampled by Turtles.Pilgrimage takes place Sept.