Visit the official site: http://itv.com/xfactor
Watch Scarlett Lee face Simon and his 50 guest judges in LA! Will her performance of I Didn’t Know My Own Strength impress its songwriter Diane Warren and be enough to take her through to Live Shows?
Download The X Factor mobile app: http://bit.ly/TXFapp
Watch full episodes on ITV Hub (UK ONLY): http://www.itv.com/hub/the-x-factor