Emma Willis hosts the first episode of the battle rounds - which will see fully half of the acts selected over the course of the blind auditions being sent home. Judges Will.i.am, Jennifer Hudson, Tom Jones and Olly Murs take up their places in the f... (more)amous red chairs as each performer tries to impress them enough to avoid the cut. However, even if the judge who selected an act decides to let them go, they still have a chance to stay in the game if they can convince one of the others to take them on.