Visit the official site: http://itv.com/xfactor Twin superstars Max & Harvey delivered a flippin' fantastic performance of Panic! At The Disco's pop hit 'High Hopes'. Will it be enough to see them through to the Semi Final? SUBSCRIBE: http://bit.ly/TXFSub Facebook: http://bit.ly/TXFFB Twitter: http://bit.ly/TXFTwi 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