Katy Perry Talks American Idol and DJ AM

Watch out, American Idol aspirants; Katy Perry—who’ll be guest-judging an episode of Idol this season—won’t suffer tone-deaf fools gladly.

Just prior to her performance at the Hollywood Palladium presented by Sounds of Buzz and Coca-Cola on Saturday night, Katy sat down for an exclusive interview with Marc Malkin, who was reporting for SoundsofBuzz.com and E! Online. The “I Kissed a Girl” singer offered some stern words of caution for would-be contestants.

“I might become a little bit of a buddy with [tart-tongued judge] Simon [Cowell], because whenever I watch that show, as much as he’s an a*shole, he’s a very truthful, honest a*shole,” Perry says. “I’m not there to build them up, buttercup. It’s weird, because I don’t want to break their hearts, but how many of us know that one person who’s been trying and trying and doing karaoke and been doing little gigs here and there at open mics, and nobody has told them that they can’t sing on pitch for, like, 15 years? And you’re like, ‘Someone needs to say something.’ And, unfortunately, I might be that gal, to tell you the truth. I always have been.”

But lest anyone think that the “Waking Up in Vegas” chanteuse is completely cold-hearted, she also offered some poignant thoughts on the recent passing of DJ AM, with whom she performed at the 2008 MTV Video Music Awards.

“I think that he left a really wonderful legacy,” Perry says. “I wasn’t really good friends with him—I only met him a few times—but every time I’ve met him, he was such a wonderful person—full of life, very bright. [His passing] reminds everybody just to live life to the fullest and love the people around you and don’t ever hold back.”

Unless, of course, you can’t sing in pitch. In which case, back away from the karaoke machine.

Watch the online World Premiere of Katy Perry’s Hello Katy Tour live from Hollywood exclusively on Soundsofbuzz.com.