Taylor Swift surprised guests at the Brooklyn Bowl in Nashville by closing out a benefit concert with Kane Brown.

So, Taylor Swift and Travis Kelce walk into a bar. No, that's not the setup to a joke: It's an introduction to what happened Tuesday night in Nashville, where Tay delivered a surprise acoustic performance of "Shake It Off" at a concert linked to her boyfriend's Tight End University camp.

Taylor Swift performed for the first time since the the Eras Tour ended, singing a spontaneous 'Shake It Off' at a Nashville football charity benefit.