She Tweeted a post: "Still feel pretty awful (Norovirus apparently). Just wanted to say sorry to all those who were coming to iTunes. "A hospital visit last night has made a big difference and I feel I am coming out the other side of it. I hate letting you all down." The Welsh singer was set to perform at the iTunes concert apart from making a string of promotional appearances to promote her new album Believe.
Story first published: Thursday, November 26, 2009, 15:23 [IST]