"American Idol" Season 11 finale

The top 10 finalists perform onstage at the "American Idol" finale on May 23, 2012, in Los Angeles.

Winner Phillip Phillips performs onstage at the American Idol Finale on May 23, 2012 in Los Angeles. (Photo by John Shearer/Invision/AP)

From left, judges Steven Tyler, Jennifer Lopez and Randy Jackson appear onstage at the "American Idol" finale on May 23, 2012, in Los Angeles.

Finalists Phillip Phillips, left, and Jessica Sanchez appear onstage at the "American Idol" finale on May 23, 2012, in Los Angeles.

Host Ryan Seacrest speaks onstage at the "American Idol" finale on May 23, 2012, in Los Angeles.

From left, finalists Phillip Phillips, Jessica Sanchez and host Ryan Seacrest appear onstage at the "American Idol" finale on May 23, 2012, in Los Angeles.

Finalist Phillip Phillips, left, and John Fogerty perform onstage at the "American Idol" finale on May 23, 2012, in Los Angeles.

Finalist Joshua Ledet and Fantasia Barrino perform during the "American Idol" finale on May 23, 2012, in Los Angeles.

Chaka Kahn performs with the female finalists during the "American Idol" finale on May 23, 2012, in Los Angeles.

Rihanna, center, performs onstage at the "American Idol" finale on May 23, 2012, in Los Angeles.

Reba McEntire and finalist Skylar Laine perform during the "American Idol" finale on May 23, 2012, in Los Angeles.

Finalist Jessica Sanchez performs onstage at the "American Idol" finale on May 23, 2012, in Los Angeles.

Neil Diamond performs during the "American Idol" finale on May 23, 2012, in Los Angeles.

Jennifer Lopez, center, performs onstage at the "American Idol" finale on May 23, 2012, in Los Angeles.

"Idol" Season 5 finalist Ace Young proposes to Season 3 runner-up Diane DeGarmo onstage during the "American Idol" finale on May 23, 2012, in Los Angeles.

Finalist Hollie Cavanagh and Season 6 winner Jordin Sparks perform during the "American Idol" finale on May 23, 2012, in Los Angeles.

The male finalists perform a special tribute to Bee Gees singer Robin Gibb during the "American Idol" finale on May 23, 2012, in Los Angeles.

Finalist Jessica Sanchez and Jennifer Holiday perform during the "American Idol" finale on May 23, 2012, in Los Angeles.

Steven Tyler performs with Aerosmith onstage at the "American Idol" finale on May 23, 2012, in Los Angeles.

Finalists Jessica Sanchez, left, and Phillip Phillips perform onstage at the "American Idol" finale on May 23, 2012, in Los Angeles.

Finalists Jessica Sanchez, left, and Phillip Phillips, center, listen as host Ryan Seacrest announces the winner onstage at the "American Idol" finale on May 23, 2012, in Los Angeles.

Runner-up Jessica Sanchez, left, congratulates winner Phillip Phillips onstage at the "American Idol" finale on May 23, 2012, in Los Angeles.

Host Ryan Seacrest, left, and former "Idol" winner Scotty McCreery, right, present an award to winner Phillip Phillips, center, onstage at the "American Idol" finale on May 23, 2012, in Los Angeles.

Winner Phillip Phillips performs his victory song onstage at the "American Idol" finale on May 23, 2012, in Los Angeles.

Winner Phillip Phillips performs onstage at the American Idol Finale on Wednesday, May 23, 2012, in Los Angeles.

Winner Phillip Phillips performs onstage at the "American Idol" finale on May 23, 2012, in Los Angeles.