Glen Campbell was recently moved into a residential care facility, as his Alzheimer's disease progresses. But his wife Kim says that, while it is disheartening to see the disease take its toll, he is happy and content in his new living arrangement.

"He plays guitar there. He's got this little guitar ... he picked it up and stood up in the living area in front of some of the residents and he played a couple songs," she tells People magazine. "Then he thanked them all for coming. Then he went over and laid down on the sofa and took a nap. It was so sweet."

His wife of 31 years met with reporters at the premiere of the documentary of his final tour, 'Glen Campbell ... I'll Be Me,' on Friday (April 18), and shared the latest updates on the 'Wichita Lineman' singer.

"He has trouble communicating," she shared with Country Weekly. "[But] he's happy and content and still has his sense of humor. He's doing pretty well, considering everything. We see him every day. We had him out to the house last night and we all had dinner together with the family."

The family made the decision to move Campbell after it became too difficult for them to care for him in their home.

"You have to watch him every single second. He's up all hours of the night and wanders," Kim says. "He'll pick up knives and sometimes he won't want to relinquish it."

His daughter Ashley, who traveled with her father as a member of his band, said everything posed a potential threat to the country music icon.

"[It can be dangerous] with all the household appliances and dish soap liquid and olive oil," she adds. "He'll drink anything ... if you lose concentration for a second, he could hurt himself."

The film, which includes cameos by Keith Urban, Vince Gill, Bruce Springsteen and several others, shows the struggles Campbell faced as the disease robbed him of more and more of his memory.

"The idea was to make a film that he would want to see," director James Keach explains. "It's not a downer at all."

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