17-year-old girl brings the house down, but no one expects this kind of ending!

<p id="watch-headline-title" class="yt"><span id="eow-title" class="watch-title long-title yt-uix-expander-head" title="[Full Audition] Harriet Whitehead - What's Up - The Voice UK - Blind Audition 4" dir="ltr">[Full Audition] Harriet Whitehead - What's Up - The Voice UK - Blind Audition 4</span></p>