The knockout performance in question happened at the Tight Ends and Friends concert at Music City's Brooklyn Bowl, with Swift getting the crowd hyped up as she took the stage in a black dress and matching heeled boots. As she strummed her guitar, Brown danced along on stage and added extra percussion by shaking a stick of bells.

During Wednesday’s installment of the “New Heights” podcast, star Chiefs tight end Travis Kelce explained that he and the 14-time Grammy winner pre-planned her on-stage appearance at the Tight Ends & Friends event, where she performed a rendition of her hit song “Shake It Off” with country singer Kane Brown.

Taylor Swift surprised fans at a benefit concert at Tight End University by performing "Shake It Off" with Kane Brown.