"I think you have to see something like this with your own eyes at least once in your life," says IT specialist Krzysztof Waryszewski as he leaves a Taylor Swift concert in Warsaw. Outside the stadium, fans who had not been able to get tickets, dance and sing along. "There's something extraordinary about everyone shouting the words to every song from start to finish for three and a half hours with probably 65,000 people. So there's a bit of magic in that," says data engineer Julia Wojtas after the concert. IMAGES AND SOUNDBITES