It was a night full of surprises when Florida Georgia Line played a sold-out show at Nashville’s Bridgestone Arena on Thursday night (10/13). Midway through FGL’s set, the Backstreet Boys made a surprise appearance and performed their hit “Everybody (Backstreet’s Back)” for the screaming crowd. The ’90s boy band then joined FGL on “God, Your Mama, and Me,” their collaborative song from the duo’s Dig Your Roots album. And, the surprises kept coming, with Jake Owen taking the stage later in the set to help the duo perform “Sun Daze.” Then, during their encore, FGL introduced Nelly to the stage and the three performed a medley of the rapper’s hits as well as their collaborative rendition of “Cruise.”