American Idol returns tonight on Fox for a 12th season, with an all-new panel of judges -- Mariah Carey, Nicki Minaj, Keith Urban and veteran Randy Jackson--  and a new crop of contestants who, according to the show's major players, are definitely out of the ordinary.

"We have seen...quite possibly, the most diverse group of artists in terms of their styles, their looks, their backgrounds, their size.  I think this will be the most diverse crew we've ever brought back," host Ryan Seacrest tells ABC News Radio.  Judge Keith Urban agrees, saying, "You might say they sing terribly.  Yep, maybe they do.  Maybe they look completely weirdo.  Maybe we can't even tell if they're male or female but there's something about them that's so incredibly compelling."

If you can't wait until tonite here a quick preview.