Simon Cowell knows a star when he sees – or hears – one. From One Direction to Carrie Underwood and from The X Factor to American Idol, he’s helped bring former nobodies to house hold names.

In honor of The X Factor premiering tonight, we’ve gathered some of our favorite talents that Simon helped discover!

Check it out after the jump!

It's the No. 1 song of Summer and we've seen everyone from President Obama to the US Olympic Swim Team to Katy Perry cover it and now Kelly Clarkson takes on Carly Rae Jepsen's Call Me Maybe!

Check out the video of Kelly getting the crowd going at the Mixtape Festival in Hershey, Penn with her rendition of the catchy tune.

If there’s one concert that you have to see before the summer is over, it has to be Kelly Clarkson and The Fray. And it’s not just because of those two big names, but also because of one rad band that’s on the road with them – Carolina Liar!

Chelsea Briggs recently sat down with the fellas on their tour bus and they chatted about touring with Kelly, the possibility of a new album and even showed a magic trick. Yup, you read that right – a magic trick.

Take a look after the jump!