In her new Eras Tour book, Taylor Swift revealed some behind-the-scenes tidbits about every era of her show, including her favorite song to perform.

Taylor Swift's Eras Tour-commemorating hardback book hit stores Friday, just nine days before she performs the show for the final time. And as much as we thought we knew about these concerts from the 21 months of it being dissected,

It’s been a long time coming. With Taylor Swift gearing up to say goodbye to her Eras Tour — a record-breaking show that spanned the globe for nearly two years — she’s taking a retrospective look at her favorite on stage moments,