R&B singer Beyonce Knowles payed a hospital visit to two concertgoers who were injured at her St. Louis show Sunday night after Pyrotechnics went wild reports AP. The two concertgoers were taken to Barnes-Jewish Hospital emergency room with minor injuries, says Spokeswoman Kathy Holleman. Holleman would not release their names. Soon after the concert, Knowles arrived at the hospital, said head nurse Darryl Williams. “She was just very concerned about the people injured in the audience,” Williams said. “It was unannounced and we kept it very low-key so that she could spend time with them.” Knowles, 25, met with the fans for about 45 minutes. “I just thought it was a great thing for someone of her stature to do,” Williams said. Knowles’ world tour opened in April in Tokyo and runs through early September. Other stops include New Orleans, Dallas, New York City, Washington, Boston, Chicago, Denver, Las Vegas and Los Angeles.