Kris Allen performs "No Boundaries" during the Season 8 finale of "American Idol."FOX/Ray Mickshaw - Thursday, May, 21, 2009, 6:21 PM

Adam Lambert performs with Queen onstage during the Season 8 finale of "American Idol."FOX/Ray Mickshaw - Thursday, May, 21, 2009, 6:21 PM

Kris Allen performs with Queen onstage during the Season 8 finale of "American Idol."FOX/Ray Mickshaw - Thursday, May, 21, 2009, 6:21 PM

Kris Allen and Keith Urban perform "Kiss A Girl" onstage during the Season 8 finale of "American Idol."FOX/Ray Mickshaw - Thursday, May, 21, 2009, 6:21 PM

Adam Lambert performs onstage during the Season 8 finale of "American Idol."FOX/Ray Mickshaw - Thursday, May, 21, 2009, 6:21 PM

Adam Lambert and KISS perform a medley onstage during the Season 8 finale of "American Idol."FOX/Ray Mickshaw - Thursday, May, 21, 2009, 6:21 PM

Adam Lambert performs "No Boundaries" (Winner's Single) on "American Idol."FOX/Frank Micelotta - Wednesday, May, 20, 2009, 6:20 AM

Kris Allen performs "Ain't No Sunshine" by Bill Withers (Contestant's Favorite) on "American Idol."FOX/Frank Micelotta - Wednesday, May, 20, 2009, 6:20 AM

Adam Lambert performs "Mad World" by Tears for Fears (Contestant's Favorite) on "American Idol."FOX/Frank Micelotta - Wednesday, May, 20, 2009, 6:20 AM

Kris Allen performs "What's Going On" by Marvin Gaye (Simon Fuller's Choice) on "American Idol."FOX/Frank Micelotta - Wednesday, May, 20, 2009, 6:20 AM

Adam Lambert performs "A Change Is Gonna Come" by Sam Cooke (Simon Fuller's Choice) on "American Idol."FOX/Frank Micelotta - Wednesday, May, 20, 2009, 6:20 AM

Kris Allen performs "No Boundaries" (Winner's Single) on "American Idol."FOX/Frank Micelotta - Wednesday, May, 20, 2009, 6:20 AM

Kris Allen performs "Heartless" by Kanye West on "American Idol." FOX/Frank Micelotta/PIctureGroup - Wednesday, May, 13, 2009, 5:13 AM

Danny Gokey performs "You Are So Beautiful" by Joe Cocker on "American Idol." FOX/Frank Micelotta/PIctureGroup - Wednesday, May, 13, 2009, 5:13 AM

Adam Lambert performs "Cryin'" by Aerosmith on "American Idol." FOX/Frank Micelotta/PIctureGroup - Wednesday, May, 13, 2009, 5:13 AM

Allison Iraheta performs "Cry Baby" by Janis Joplin on "American Idol."FOX/Ray Mickshaw - Wednesday, May, 6, 2009, 6:6 AM

Kris Allen performs "Come Together" by The Beatles on "American Idol."FOX/Ray Mickshaw - Wednesday, May, 6, 2009, 6:6 AM

Danny Gokey performs "Dream On" by Aerosmith on "American Idol."FOX/Ray Mickshaw - Wednesday, May, 6, 2009, 6:6 AM

Adam Lambert performs "Whole Lotta Love" by Led Zeppelin on "American Idol."FOX/Ray Mickshaw - Wednesday, May, 6, 2009, 6:6 AM

Adam Lambert and Allison Iraheta perform "Slow Ride" by Foghat on "American Idol."FOX/Ray Mickshaw - Wednesday, May, 6, 2009, 6:6 AM

Kris Allen and Danny Gokey perform "Renegade" by Styx on "American Idol."FOX/Ray Mickshaw - Wednesday, May, 6, 2009, 6:6 AM

Adam Lambert performs Rat Pack Standard "Feeling Good" on "American Idol."FOX/Frank Micelotta - Wednesday, April, 29, 2009, 5:29 AM

Kris Allen performs Rat Pack Standard "The Way You Look Tonight" on "American Idol."F Micelotta/American Idol 2009/Getty Images for Fox - Wednesday, April, 29, 2009, 5:29 AM

Danny Gokey performs Rat Pack Standard "Come Rain Come Shine" on "American Idol."FOX/Frank Micelotta - Wednesday, April, 29, 2009, 5:29 AM