The fourth round of Blind Auditions arrives, as Emma Willis ushers another selection of would-be stars onto the stage to have their skills appraised. As ever, coaches Jennifer Hudson, Tom Jones, Will.i.am and Olly Murs are all seated with their backs to the contestants, meaning they must judge each performer's skill based solely on the power of their voice. Any of the would-be stars who are welcomed to join a coach's team will be in with a chance of ultimately claiming a record deal with Polydor.