Surprise. This is where Simon Cowell attempts to start straddle your weekend - if you let him. In the second edition this week, Gary Barlow, Nicole Scherzinger, Tulisa and Louis Walsh welcome more singers to the stage, from the genuinely gifted to those who should ideally stick to their day jobs. Dermot O'Leary witnesses the celebrations, tears and tantrums backstage as the hopefuls get a pass to the next round or go home disappointed.