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OTRC: 'American Idol' spoilers: Top 40 picked, Steven Tyler has a nasty habit

Nigel Lythgoe speaks to OnTheRedCarpet.com in January 2011 about the revamped 10th season of 'American Idol,' which debuts on Jan. 19, 2011.

The revamped "American Idol" has already narrowed down the competition to 40 contestants, many of which are not old enough to drive, while new judge Steven Tyler's potty-mouth may spur some bleeps and the infamous show logo censor graphic.

The 10th season of the FOX singing competition series, the first without acerbic Simon Cowell, is set to debut on Wednesday at 8 p.m. ET following auditions that were filmed across the United States throughout the past few months.

Nigel Lythgoe, who is returning as executive producer following last year's series shake-up, says the group of finalists is diverse and includes many 15-year-olds and an aspiring young country singer. The minimum age of eligibility had been lowered from 16 to 15 for the upcoming season.

"I think the audience is going to be surprised at the 15-year-olds," Lythgoe told OnTheRedCarpet.com. "We've got 40 at the moment, chopping that down to 20 as we speak and there are surprisingly, a lot of 15-year-olds in that group."

"The boys are unique," he added. "We've got jazz singers, we've got country singers, we've got rock singers, we've got R&B singers and with the girls, we've got some great voices, some big voices, some smaller voices, a really good 15-year-old country voice, one of the best I've heard."

Lythgoe said Tyler, singer of the rock band Aerosmith, was unable to curb a bad habit that could spur those "American Idol" censor graphics seen on the mouths of contestants on the show in the past - his swearing.

"It's part of Steven Tyler's language, his life,' Lythgoe said. "I'm certainly not going to stop him swearing. So we will hopefully have a delay button and they'll press that and it'll go, 'Bleep'. I'm already bleeping him in the edit, to be frank with you. But the trouble is he'll make the mistake and then apologize and swear again. And you go, 'Yes, Steven, don't worry.'"

The contestants, Lythgoe said, appeared less intimidated by Lopez and Tyler, both of which he said "held back" when it came to their bedside manner of rejection. Cowell, who left the show after the season nine finale last spring, sometimes drove "American Idol" hopefuls to tears with his dry, blunt and often nasty comments.

"They aren't as intimated as they are for instance in going in front of Simon Cowell who they knew would be absolutely cruel to them if they weren't any good," Lythgoe said. "Here, they are just intimated but elated by the stars that they're in front of and they just want to give off their best and the great thing about it is that both Jennifer and Steven are there to help them and Randy, I've got to say."

Lopez and Tyler said it was difficult to tell bad singers they are not good.

"Some people just get crazy," Lopez said on The Ellen DeGeneres Show recently. "They can't take the 'no' for an answer. We've had weird moments. It's a riot."

Tyler has said some of the contestants were "full of themselves."

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