After the Four Chair Challenge round of THE X FACTOR, Simon Cowell, Demi Lovato, Kelly Rowland and Paulina Rubio each revealed the four acts in their categories that will continue in the competition and join them in the live shows.
On last night's The X Factor on FOX, the top 40 acts were revealed and the judges were assigned their categories. Also on the show, it was announced that the remaining contestants would face a new round of competition known as the 'Four Chair Challenge'. Check out a sneak peek below!
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