 are known for their blend of catchy pop tunes, precision choreography, and equally precise personal grooming, all of which were on show in their 60-minute gig. Some fans had traveled from South Korea to experience this moment. Coldplay, Cyndi Lauper, and Dua Lipa are also among the headline acts at this year's festival, which wraps up on Monday. For NPR News, I'm Vicki Barker in London.