THE SOUND OF SUMMER TURNED LOOSE: The crowd was on its feet before the first chord even rang out. Then Alan Jackson hit that opening line of “Summertime Blues,” and the whole place came alive. It’s the kind of song that feels like cold lemonade, open highways, and Friday nights that never end — pure country joy with a rock ’n’ roll grin.
THE SOUND OF SUMMER TURNED LOOSE: The Night Alan Jackson Lit Up the Stage With a Song That Made Everyone…