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

Pop megastar Taylor Swift had a surprise live performance of her hit single "Shake It Off" during this week's Tight End University in Nashville, Tennessee.

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