Katy Perry to perform on "American Idol"

(CBS) Katy Perry will be taking the stage on "American Idol" next week, singing her hit song "E.T."

David Cook (who won on the show's seventh season) will also make an appearance during the results show on Thursday, to perform his new single "The Last Goodbye." 

Pictures: Katy Perry
Pictures: "American Idol" Season 10
Special section: American Idol

"Idol" voters sent Paul McDonald packing this week, leaving Casey Abrams, Lauren Alaina, James Durbin, Stefano Langone, Jacob Lusk, Scotty McCreery and Haley Reinhart still in the competition. Next week, the remaining finalists will have to sing songs from the 21st century, according to USA Today.

McDonald was the first male finalist to be sent home this season.

American Idol airs Wednesdays and Thursdays at 8 p.m. EDT on FOX.