British singer Sarah Brightman's duet with CHRIS THOMPSON, I WILL BE WITH YOU (WHERE THE LOST ONES GO) is the odd choice of theme song for the upcoming Pokemon: Movie 10. Meanwhile, Brightman's Running has been selected as the official theme song for the 2007 IAAF Athletics Championship Games in Osaka, Japan, where the singer will be the first Green Project Ambassador and help to raise awareness for global environmental issues.