09/13/2013 05:27 am ET Updated Sep 13, 2013

'The X Factor': Subway Singer Denise Weeks Brings New Passion To Whitney Houston Classic (VIDEO)

It's quite a jump to go from singing on the subway to singing in front of thousands, not to mention Simon Cowell and his fellow judges on "The X Factor." But that was exactly the journey taken by 41-year-old Denise Weeks. A single mother, she sings in the New York City subway for tips.

She lost the father of her two children when they were very young, and devoted herself to doing everything she can for them. Winning a competition like "The X Factor" could change their lives for the better. And she certainly proved that her voice was made for bigger things than subway cars while belting out a Whitney Houston classic.

Kelly Rowland told Denise that the competition had been waiting for someone like her. Simon was trying to figure out how she'd never been discovered while singing in the subway. Wetpaint's Amber Garrett agreed, saying that it would be impossible not to notice that voice. And GossipCop said that she brought new life and emotion to the classic track, originally recorded by George Benson in 1977 before being popularized by Houston in 1986.

"The X Factor" audition rounds continue on Wednesdays and Thursdays at 8 p.m. ET on Fox.

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