Teen pop band PopLyfe proved on tonight's final performance episode of 'America's Got Talent' that nerves aren't lost on budding stars. The group hit the stage to perform Queen's 'We Are the Champions' with 'We Will Rock You,' and while they looked awesome, they couldn't quite hit the notes. By the end of the number, frontwoman Kehlani Parrish had mascara tears rolling down her face.

All of the PopLyfe kids were dressed for a show, sporting different prints of black and white as they performed against a pop art screen. Though their performance didn't stand up to the visual (okay, it was awful), the group is a favorite to win 'AGT' this season. If they did take home the crown, they'd be the first band to snag the title in the show's history.

Piers Morgan, who was obviously rooting for the underdogs, reminded NBC viewers to "vote on the whole show, not just tonight." Sharon Osbourne told the tear-covered Kehlani that no matter what, she's a star. "Your singing wasn't great tonight, but your passion was," she said. "You can back that. You are a star."

The young hopeful told the crowd sincerely just how badly she and her PopLyfe peers want to win. "I just hope that people understand that we worked so hard," Kehlani explained, sobbing. "I just hope people understand we really want this."

On the September 14 'America's Got Talent' finale, PopLyfe will get the once-in-a-lifetime chance to perform with Stevie Wonder.

Watch Poplyfe Perform Queen's 'We Will Rock You' + 'We Are the Champions'