Visit the official site: http://itv.com/xfactor
After Simon Cowell told them to come back as a pair, Aaliyah Robinson and Acacia K join forces to wow the Judges with Ariana Grande's Bang Bang!
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