Glen Campbell is a music legend. Best known as a country singer, the "Rhinestone Cowboy" was part of the Wrecking Crew studio musicians that included legendary piano player Leon Russell. The studio musicians played on dozens of early rock and roll hit before  they went off in different directions.

Glen Campbell has been moved into an Alzheimer's disease care facility. The legendary guitarist and singer was diagnosed with Alzheimer's disease three years ago.

The move might be temporary. A family friend told People Magazine "I'm not sure what the permanent plan is for him yet. We'll know more next week."

Campbell first opened up about having Alzheimer's to PEOPLE in an exclusive 2011 interview. At the time Campbell told People, "I still love making music. And I still love performing for my fans. I'd like to thank them for sticking with me through thick and thin."

Glen Campbell's battle with Alzheimer's disease united his fans in support and sympathy since Campbell and his wife Kim went public with his diagnosis in 2011. Glen and Kim Campbell went public so the "Rhinestone Cowboy" could continue performing as long as possible. Campbell said he didn't want audiences wondering or worrying about him if he forgot lyrics or repeated himself in the banter between songs.

The last tour by Glen Campbell, called The "Goodbye Tour," was filmed for a documentary called "Glen Campbell ... I'll Be Me" which follows Campbell, his wife, and their three adult children - Cal, Shannon, and Ashley. The movie will make its debut Friday at the 2014 Nashville Film Festival. Campbell had to cancel the international tour dates in July 2012 due to his health.

Campbell's 61st studio album, "Ghost on the Canvas" was expected to be his last. But he put out a new collection of songs called "See You There" last December.

On March 26, Campbell was honored with the inaugural Glen Campbell Courage Award at the Alzheimer's Association's A Night at Sardi's event at the Beverly Hilton Hotel.

Campbell had a string of hit singles in the 1960s, including "Wichita Lineman," "Galveston," "By The Time I Get to Phoenix" and "Where's The Playground Susie." He opened for the Doors briefly, with just a guitar in his hand. No backup musicians. The tour didn't last long. At that point he was happier in the studio with his friends.

In 1968, Campbell was named CMA Entertainer and Male Vocalist of the Year. He was inducted into the Country Music Hall of Fame in 2005. Glen Campbell sold more than 45 million albums over the course of his career.