The Top 8 finalists on The X Factor tackled chart-topping songs Wednesday, knowing that Thursday they'll face another double elimination on Fox's singing show. With only a fraction of a percent separating the Top 4 contestants after last week's show, the competition is getting fierce.
Also getting fierce? The banter between judges Simon Cowell and Demi Lovato, with Lovato not responding well to Cowell's criticisms of her contestants, and chiding him about everything from his age to his bachelor status. Cowell responded by telling the 20-year-old that he had sold more than 300 million records in his career. (Snap!)