Rihanna will visit American Idol for its results show on Wednesday where she'll perform her Latin-flavored single "Te Amo" before audiences learn which Idol hopeful gets the boot. Jason Derulo will also show up to sing his hit single "In My Head" and season seven runner-up David Archuleta will song John Lennon's "Imagine."

Rihanna's appearance is sure to help the show win yet another Wednesday night ratings battle. "Te Amo" hasn't been made a single in the United States yet, but her current chart-topper, "Rude Boy," might be a little too racy for Idol's family audience.

The theme for this week's Idolcontestants is Lennon/McCarthy and each contestant will take a crack at one of the duo's hit songs as they compete on Tuesday. David Archuleta made Lennon's "Imagine" his signature song when he wowed audiences with the ballad two seasons ago.