Starplex Pavilion's specialty is big-ticket country concerts. The wide stage design, ample lawn seating and big-screen video boards lend themselves well to warm summer nights spent under the stars with a beer or two in hand. Saturday night's bill of Lady Antebellum and Kelsea Ballerini should make for a particularly exciting country showcase. Back out on the road after the lengthiest break of their decadelong career, the three members of Lady Antebellum have been touring this summer with a renewed energy and vigor. They've added a horn section, punched up the volume on their amps a notch or two, and delved into their back catalog, out to prove that they’re more than "Need You Now" and "I Run To You." (Not to worry, those hits will still make it onto the evening's setlist.) Ballerini, a 2017 Grammy nominee for best new artist, works her Tennessee drawl to maximum effect on her sunny and charismatic pop-country tunes. She's a natural energizer who will get the crowd up and moving as the sun goes down and folks make their way to their seats and lawn spots.