The nation's favourite singing show continues as the remaining contestants sing their hearts out once again on the live stage, with judges Louis Walsh, Sharon Osbourne, Nicole Scherzinger and Simon Cowell resuming their seats behind the judges' desk to battle it out with their contestants in the hope of impressing the audience at home. This year Louis has the Boys, Nicole the Overs, Simon the Groups and Sharon the Girls, with resident host Dermot O'Leary leading the proceedings and keeping the judges in check along the way. There are also more guest performances from big musical names.