Go Inside Miranda Lambert's Show Inside a Small Nashville Bar

— -- Miranda Lambert played for a few hundred lucky fans at Nashville's Exit/In on Tuesday night. She announced the free show on Instagram just hours before it began at 8 p.m.

The performance gave the singer and her band a chance to run through their Certified Platinum Tour set list in front of a group of fans before the trek launches Thursday.

"I'm glad to be here with no video, no fuss, no frills," she told the small audience at one point. "Just us and the music."

While the performance featured Lambert's biggest hits, including "White Liar," "Mama's Broken Heart," "Automatic" and her new single, "Little Red Wagon," she also threw in a few covers. RaeLynn and Gwen Sebastian joined Lambert for a trio performance of The Dixie Chicks' "Cowboy Take Me Away," and she and Sebastian closed the show with a duet on "Girl Crush" by Little Big Town, which she has said is her favorite band.

However, the night wasn't without some drama. Halfway through the show, security tackled a man trying to rush the stage as Lambert finished up her performance of "Smokin' and Drinkin'." The incident only added to the rowdy vibe of the evening for the country star.

"I feel so at home, people," she gushed. "This is where I started."

Lambert rounded out the set performing sultry covers of ZZ Top's "Tush," "Mississippi Queen" by Mountain and Wilson Pickett's "In the Midnight Hour." She also gave each member of the band a chance to perform a cover song, and their choices ranged from the Beatles' "Come Together" and George Thorogood's "Bad to the Bone" to "Zombie" by The Cranberries and "Season of the Witch" by Donovan.