The finalists line up to perform in front of the live studio audience and millions of viewers at home. Dermot O'Leary presides over proceedings, while mentors Gary Barlow, Nicole Scherzinger, Tulisa and Louis Walsh take their seats behind the judges' desk. The judges are sure to disagree over the acts as the competition hots up, but one thing they can agree on is that the standard of contestants is higher than ever this year. In an exciting first for the series, contestants can sing their own songs and play guitar this year
