The 20-year-old, who has sparked an internet storm following her appearance on the TV talent show on Saturday, was speaking ahead of her gig at The Leadmill in the city tonight.
Lucy, of Stannington, said: “Music was a hobby. I went to college in 2010 because I wanted to become a firefighter but when I was working on a demolition site, I broke my leg after I fell 40ft and got covered in 1.4 tonnes of slate.
“I was told I couldn’t be a firefighter any more, so thought I would play it safe and get a more normal job.”
This week has been far from normal for the singer, who wowed The X Factor judges with her song Last Night (Beer Fear).
She said: “The reaction has been amazing, I just can’t believe it. I’ve got 50,000 followers on Twitter, 2.8 million people have seen my audition on YouTube and my Facebook page has got 26,000 likes.”
Her new-found success was marred when Sony bosses asked her to remove her album and single from the iTunes download site, to ensure all contestants ‘receive the same exposure’ - but it has not dampened her spirits.
She said: “It’s amazing that the album I recorded in my mate’s living room on a £30 microphone has done so well - I just keep thinking, ‘how well could I do in a proper studio?’”
Lucy is now through to the boot camp stage of The X Factor.
She said: “I just hope I can make some sort of successful venture out of this, whether it’s independently or on The X Factor.”
Lucy grew up in Buxton, but moved to Sheffield six months ago.
She said: “I moved to Sheffield because of its music scene and friendly, welcoming atmosphere. I love Sheffield, I like the people and it feels like home to me here. This week has been amazing and I want to sincerely thank everyone for their support.
“I hope that Sheffield will adopt me as its X Factor contestant.”
Doors for tonight’s gig at the Leadmill open at 7pm and Lucy will be on stage at 9.30pm. The show is open to people aged over 14.
She said: “The gig at the Leadmill tonight is to say thank you really. It’s surreal to be playing somewhere so prestigious.”