Laura Bretan from Chicago received a standing ovation and a ticket straight to the live shows after a spine-tingling
rendition of Nessun Dorma.
Simon Cowell said: "I have never heard anything like that in all the years I've been doing this show."
Melanie Brown: 'You made all my hairs stand up on end and you're only 13-years-old.'
"Nessun dorma" is a famous aria from the final act of Giacomo Puccini's opera Turandot.
It is sung by Calaf ("the unknown prince") who falls in love with the beautiful but cold Princess Turandot.
The aria, whose title translates as "Let no one sleep", follows the proclamation of Princess Turandot that no one shall sleep until
they find out the name of the unknown prince.
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