Wrong Chord? Girl Made A Big Mistake On Stage, But Then Blew Everyone Away!

<p id="watch-headline-title" class="yt"><span id="eow-title" class="watch-title long-title yt-uix-expander-head" title="Gabz singing 'The One' | Week 7 Auditions | Britain's Got Talent 2013" dir="ltr">Gabz singing 'The One' | Week 7 Auditions | Britain's Got Talent 2013</span></p>