Idol: David Cook Shows He Hasn't Lost A Step

With a heavy heart, David Cook returned to the stage that made him a star.

After cancelling two concert dates earlier this week to spend time with his brother Adam, who is suffering from brain cancer, last season's winner belted out a strong rendition of his single, Come Back To Me, in a pre-taped performance. The guitar he played adorned his ailing brothers initials.

Newsday's Jamshid Mousavinezhad said Cook, in his performance, was "every bit as controlled, intense and good as he was on the show last year."

"I think he was the most creative performer Idol's ever had," he wrote.