The top 8 American Idol finalists close out the Idol Gives Back show singing “Shout to the Lord” in this video clip.

Mariah Carey sings “Fly Like a Bird” in this April 9 American Idol “Idol Gives Back” video clip (hey, Randy Jackson’s playing bass!).

Charming as always, Brad Pitt appears on the April 9 American Idol “Idol Gives Back” in this video clip.

The top 8 American Idol finalists sing “Seasons of Love,” from Rent, in this April 9 “Idol Gives Back” video clip.

Wow, Annie Lennox’s Idol Gives Back video piece really got to me… and then she followed it up with this amazing performance. Check out Annie Lennox on the April 9 American Idol.

Former American Idol winner Carrie Underwood (looking gorgeous, naturally) performs on the April 9 “Idol Gives Back” in this video clip.

Fergie sings “Barracuda” with Heart in this April 9 American Idol “Idol Gives Back” video clip. Check out the much talked about cartwheels Fergie pulls off.

Miley Cyrus performs on American Idol “Idol Gives Back” in this April 9 video clip.