Greyson Michael Chance
Greyson Michael Chance is the quintessential overnight sensation. A day after a video showing the tween performing Lady Gaga's 'Paparazzi' exploded on YouTube, Chance is jetting around the country, rubbing elbows with Ellen DeGeneres (he'll be on her talker on Thursday) and fielding a flood of interview offers. Meredith Vieira's fingers must be tired from dialing all day.

You've seen the video and you know what his acrobatic voice does to tween girls. But who is Greyson? PopEater spoke with the 12-year-old virtuoso's music teacher, Kelly Cheek, to get the skinny on the kid everyone's calling the next Justin Bieber.