The X-Factor judges had mixed feelings when the categories were announced on Wednesday night’s show (October, 10). After more than half the singers were told they wouldn't be advancing, the singers then learned they'd be competing in groups of Teens, Young Adults, Over 25s and Groups, reports MTV.

CeCe Frey, Willie Jones, Janelle Garcia, Nick Youngerman, Paige Thomas and Jillian Jensen all had been picked to compete in the Young Adults group, which will be under Demi Lovato’s control. "I have the winning team," she promised. Jason Brock, Daryl Black, David Correy, Tara Simon, Tate Stevens and Vino Alan grabbed places in the Over 25s group, which will be over seen by La Reid, who didn’t seem too happy with the decision. "The what?" he angrily said, before slamming the phone down storming off. "Are you serious? Oh my god! That is amazing," said Britney Spears on learning that she’d been handed Beatrice Miller, James Tanner, Carly Rose Sonenclar, Diamond White, Reed Deming and Arin Ray in the teenagers group. Simon Cowell takes the reins with the groups, Sister C, Dope Crisis and Emblem3, and said: "I'll make the most of it. I'm happy for them.”

Ironically, it was the youngest mentor, Justin Bieber, who had some words of advice for the oldest competitors, the Over 25s. "They told me I was too young and you're never too old or too young," he assured. "You definitely are in good hands."