Leona Lewis rose to prominence during the third season of "The X Factor," the British equivalent of "American Idol." Lewis won "The X Factor" thanks to her strong performances of songs like "Over The Rainbow" and "Summertime." She also covered the song "A Moment Like This" by the original "American Idol" winner, Kelly Clarkson. Lewis gained the respect of noted curmudgeon Simon Cowell and has been compared to Mariah Carey and Whitney Houston.