The X Factor: With Rhythmix lass Perrie named after Steve Perry from rock gods Journey, she's in the perfect position for Rock Week. And with all four of the band on a high after staying in the competition last week, this group of "normal" girls are going to "rock it" according to mentor Tulisa. See more at http://itv.com/xfactor Buy this performance from iTunes: http://bit.ly/rgKjtT
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