If you're hoping for George Michael and Andrew Ridgley doing a rendition of Club Tropicana complete with neon thongs, prepare to be devastated. Mariah Carey takes the stage to perform her new song I Want to Know What Love Is, a cover of Foreigner's Eighties power ballad. Britain's Got Talent star Susan Boyle sings her debut single Wild Horses, from her album I Dreamed a Dream, and Dermot O'Leary announces the results of the public vote, before the contestants in the bottom two have to sing again for Simon Cowell, Cheryl Cole, Louis Walsh and Dannii Minogue.