'X Factor': Ella Stuns Judges With Incredible Voice And Own Song - The Best Performance? (VIDEO)

A 16-year-old student called Ella gave the X Factor judges goose bumps on Saturday when she took to the stage and performed a song written after her granddad’s death.

The touching lyrics even won over guest judge Mel B at the Manchester auditions; up till that point the former Spice Girl had offered up a raft of negative comments towards contestants.

Mel B said: "What we just witnessed was incredible," and Louis Walsh agreed: "You're a class act."

Ella chose to sing a song written after her grandfather's death

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Ella, from Tetney in Lincolnshire, who told audiences she had been performing for her grandfather since she was a toddler, seemed to capture Tulisa's heart.

The outspoken judge, gushed: "There’s so many good things I could sit here and say about you, I could go on and on - the list is endless, but the one thing is that you are the one person that I personally go ‘I really want to mentor, I really do’ I see something so special in you, there’s just a spark, you’re just a star."

Meanwhile, Gary Barlow labelled the young singer: "Out of this world."

Saturday's 75-minute episode saw a revamp of The X Factor, with producers allowing wannabes to write and perform their own original music.

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