The second performance of the night came from Jason Castro. He performed his hit performance “Hallelujah.”

After the top 6 girls performed the song “She Works Hard for the Money” Donna Summer took the stage to sing her new single, “Stamp Your Feet.” Following that the girls joined Summer to sing her hit song “Last Dance.”

Carly Smithson and Michael Johns took the stage together tonight to sing the song “The Letter.”

The next guest performance of the night was Bryan Adams. He took the stage after the top 6 guys sang the songs “Summer of 69” and “Heaven.” Nice!

Brooke White took the stage tonight with Graham Nash to sing the song “Teach YourChildren Well.” Perfect song for her.
Jonas Brothers took the stage next as the teen girls in the crowd went nuts.
The next guest appearance was from One Republic singing their hit song “Apologize.”

Jordin Sparks returned to the Idol stage tonight to sing her new single.

Carrie Underwood made an appearance on the show tonight to sing her current single “Last Name.”

The second performer of the night is Bo Bice, the runner up on season 4 of American Idol. He sang the song “Witness.”

Neil Diamond sang his new song “Pretty Amazing Grace.” His new album “Home Before Dark” drops on May 6.