S&M singer Rihanna is set to feature on the new Coldplay CD Mylo Xyloto, on the track Princess of China. Digital spy reports that Chris Martin, lead singer for the group Coldplay, told The Sun "She has such an amazing voice and it's so different to mine. "When the vocal happened I thought 'Wow, you sound different' but I think that's also because she was singing a different song to what we are used to hearing from her and it is written by a bloke from Devon." The Sun also said that Chris also recalled the moment when he asked the Bajan singer whether she would be up for the collaboration, admitting that he was initially nervous about approaching the star. "The album is designed as a whole piece. It has boy and girl lead characters and top of our list for the girl part was Rihanna... but it took a while to pluck up the courage to ask her," he said. "We did a show in Las Vegas and I met her and said, 'Do you think there's any chance?' I was very Hugh Grant-like and spluttering about it." Coldplay recently revealed the full track listing for Mylo Xyloto via Twitter. The album contains 14 songs, including singles 'Every Teardrop Is a Waterfall' and 'Paradise'.