Here’s what to know about Tight End University after Taylor Swift's surprise performance during a benefit concert at Nashville's Brooklyn Bowl.

Taylor Swift wowed fans with a surprise performance of her track 'Shake It Off' at her boyfriend Travis Kelce's Tight Ends & Friends Concert in Nashville on Tuesday, June 24.

Six months after she performed the last concert of the Eras Tour, Taylor Swift was finally ready to shake off her hiatus from the stage — at least for the length of one rousing song — as she picked up an acoustic guitar and sang “Shake It Off” for a stunned audience at a club