Colbie Caillat On 'American Idol:' 'Adam's Going To Win'

Colbie Caillat Cruising To First No. 1 Album
Colbie Caillat is a dedicated fan of "American Idol."

"I'm like the loser that goes home from the studio and watches every night," the 23-year-old singer tells, but unlike millions of viewers, she's not quite on the Adam Lambert bandwagon.

"I think Adam is the most talented vocally, but I don't love how he turns every song into that style of music," says Caillat, who nonetheless agrees that Lambert is the favorite. "I think Allison [Iraheta] has a beautiful voice…and people are having a crush on Kris [Allen], for sure. They all have their own different talents, it's hard. But Adam's going to win."

Caillat will join the "American Idol" live audience tonight (April 29) as a guest of judge Kara DioGuardi, who co-wrote three tracks for Caillat's sophomore effort "Breakthrough," due in late August. DioGuardi joined Caillat and a small team of songwriters and producers for a three week "writing camp" in Hawaii to develop new material for the record.

"I was writing with Jason [Reeves] when I came home from tour, and he was hanging out with Kara in the studio," says Caillat. "She ended up adding this amazing part to one of my songs and I got along with her really well, so I was like, ‘Do you want to come to Hawaii with us? Let's make this a group thing.' I think opening your mind to new things is great, especially for me trying to grow as an artist."

"Falling for You," the debut single from Caillat's upcoming album, will be released in June. Her first album, "Coco," has sold 1,916,000 copies according to Nielsen SoundScan and "Lucky," her current duet with Jason Mraz, is at No. 9 on this week's Adult Top 40 Airplay chart.