Known as the "butterfly" American pop singer mariah Carey, 25, announced on the safe side, she will be canceled in the Belgian capital Brussels concert tour. "I love the fans in Brussels, but in this time, I was advised to cancel performance, to ensure that the fans, the band, audience and all the people who take part in the tour safety," kelly on the same day in "twitter" personal home page, said in a statement, "I hope to meet with you soon...