Before 13-year-old singer Carly Rose Sonenclar was wowing the likes of Britney Spears and Demi Lovato -- not to mention all of America -- on "The X Factor," she was making jaws drop with her incredible vocal performances at New York City jazz clubs.

Last Thursday, the New York teen blew the judges away with her old-soul rendition of Nina Simone's "Feelin' Good" on "The X Factor." But it was far from the first time that she had stunned audiences with the jazz classic. A video uploaded to CarlyRoseSonenclar's YouTube channel last February shows the young singer, then 12, performing in the dimly-lit Birdland Jazz Club in Hell's Kitchen. The clip has started being shared this week after Carly Rose became a viral sensation, and one commenter gushed, "She is the most amazing singer I have ever heard."

Another video uploaded by the young singer, this one of Sonenclar performing the National Anthem at a Mets game in June, has also caught the attention of her new fans -- it's now been viewed over 65,000 times.

Do you think Carly Rose has what it takes to make it big? Are you excited to hear more from her? Tell us in the comments below or tweet @HuffPostTeen!

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