Kelly Clarkson Promises Blues, Ballads, Hip-Hop On Debut LP

'American Idol' winner's still-untitled debut is due April 15.

There's something for Paula, Randy, Simon and everyone else on Kelly Clarkson's upcoming album.

The winner of the first "American Idol" competition is tackling a variety of styles on her still-untitled debut, due April 15.

"There's soul. I have some rock on there. I have some big bluesy numbers and I have two ballads, I think, and some faster, hip-hoppy stuff," the singer said last week on the set of her upcoming movie, "From Justin to Kelly: A Tale of Two American Idols."

Clarkson has been recording the album on days off from last fall's "American Idol" tour and this winter's movie shoot. She's worked with an array of producers, including Rhett Lawrence (98°), Sam Watters (Jessica Simpson) and Tommy Simms (Blackstreet).

"I like variety," the singer said. "I don't want my album to sound like one big song."

The album may feature an appearance from fellow "American Idol" finalist Tamyra Gray, but not Clarkson's movie co-star, Justin Guarini.

"We were gonna work on something together, because we both write, but it's hard enough trying to get my stuff on my album right now, because I'm doing everything at such a fast pace," she said. "I love collaborating, though. It brings something different to a song."

Clarkson, who topped the singles chart in September with "A Moment Like This" (see " 'American Idol' Kelly Clarkson Crushes Singles Chart Competition"), has written several songs herself but isn't sure how many will make the album.

One she is pulling for is called "Thankful." "I just like it because it's like a thank you to everybody," she said. "I just like that whole kind of theme."

The former cocktail waitress from Burleson, Texas, said she'll promote her album with a summer tour.

"From Justin to Kelly," which chronicles Clarkson and two friends as they meet up with Guarini and two friends on spring break in Miami, is due in theaters April 25. "It's kind of like 'Grease' on the beach," Clarkson said. "And nothing, nothing like this has been done since 'Grease.' "

The second season of "American Idol" kicked off January 21 (see "Judges Size Up New Round Of 'American Idol' Hopefuls").

— Corey Moss, with additional reporting by Nick Zano