(Matt Sayles/AP Photo)

"Rhinestone Cowboy" Glenn Campbell brought the Grammy audience to its feet with a robust performance of his signature song as he was honored with a lifetime achievement award at the show.

After a flawless finish to the song he quipped, "Now I'm going to go somewhere and shut up."

It was an amazing performance by Campbell, 75,  who stunned fans last year when he announced he was suffering from Alzheimer's disease. In an interview with ABCNews'  "Nightline" last year, Campbell's wife of nearly 30 years,  Kim Woollen, said that music is a "natural memory aid" for her husband.

"We're finding out, we think it really does help his memory and help keep him from declining," Woollen said. "So it's really good for him and all the love he gets from all the fans is really encouraging, so that's why we want to do it as long as we can, because it's healthy for all of us. Music is good medicine."