When the girls debuted this '60s-tinged Pop number on the X-Factor Results
show, their sloppy and off-key performance was criticized by many. However this didn't stop the quintet entering the UK charts at #1 giving them their 4th chart-topper and their first with an original song since their 2002 debut hit "Sound Of The Underground
." Its weekly sales of 77,109 copies was the highest of any #1 single in 2008 at that point, beating the previous top tally of 72,724, achieved by Duffy's "Mercy
" 34 weeks previously.