I'm looking for a song to sing at my school's variety show. I'm a soprano, and I do best on songs that have loud, strong, powerful parts, but I don't want to sing something that's too slow. In the past I've done "There You'll Be" by Faith Hill and other songs of that nature. I want to do something more pop-oriented but that still focuses more on the vocals than the music, and also something that's a bit faster than the Titanic-esque songs and allows me to really show the strength of my voice. Does anyone have any suggestions? Ten points for best answer 
Oh, and please no songs from musicals
Oh, and please no songs from musicals