Published Saturday, 08 September 2012
Dublin teenager Melanie McCabe is bidding for X Factor glory (© ITV)
The 18-year-old was knocked out at Judges' Houses in Miami by Kelly Rowland last year and was also dumped out in 2008 by Cheryl Cole, who thought the singer was too young for the competition.
On Saturday, Melanie wowed the judges with a performance of 'Bridge Over Troubled Water', which Gary Barlow described as "extraordinary".
"Melanie, I cannot tell you how thrilled I am to see you back here this year and give a performance like that," he told the Dubliner.
Tulisa said: "Melanie, your voice is even better, than what I remember from last year. The raw talent that you have is just undeniable, you deserve to be on that stage and I'm so happy that you are there."
Guest judge Mel B added: "Well, I didn't know what to expect, you're this tiny little petite thing with this huge incredible voice, I was like, 'Woah, where did that come from?' You're a little star in my eyes."
And a tearful Louis Walsh - who knows the teenager - enthused: "You've done it!"
"I'm emotional because I know you have been through a really tough time.
"I didn't know you were going to be this good today, I knew you were going to be good but you were incredible and I am so happy for you."
I'm really ready for it this year. I was so devastated when I didn't get through. I cried the whole way home from Miami.
Meanwhile Christopher Maloney overcame his fears to belt out his version of The Rose by Bette Midler in Liverpool.
The singer told the judges it took him five years to summon up the courage to appear on the show.
He said: "I've downloaded the application form, filled it out, put it in an envelope and ripped it up every year.
"I've always wanted to sing but people have discouraged me and said that, you know, you're not good enough. They have really knocked my confidence, they've discouraged me from applying, in my head I just think I'm not good enough and that's what has stopped me from doing it."
He told Tulisa he chose the song because it was played at his grandfather's funeral.
The N-Dubz star found herself a fan in Jason, an 18-year-old from Vietnam now living in Birmingham, who presented her with a rose when he got on stage.
The teenager told Dermot O'Leary: "She's lovely, she's brilliant, she's talented, she's amazing, she's gorgeous."
There was less love on show between Gary and guest judge Geri Halliwell who joined the panel in Liverpool.
She told him: "Not everybody in Take That could sing, sorry, I'm just being honest.
"Gary, when I first started I could not sing, I can sing now. Two of your members could not sing."
The two stars disagreed over the performance of IT Girls.