Alan Jackson took his final live performance bow Saturday night in Nashville at Nissan Stadium, and he was joined by a bevy of fellow stars, both in real life and virtually, including Taylor Swift who appeared via video. In a clip played right before Jackson took the stage for his last concert on his  One More for the Road – The Finale tour, Swift’s surprise video was played on screens flanking the stage.  “Hi Alan, it’s Taylor. I just want to say thank you for your decades of unbelievable