Glen Campbell brings audience to its feet at Grammys

The 75-year-old actor appeared on stage with contemporary country stars of Perry and Blake Shelton, preceded him with their versions of two other hits Campbell, "Gentle on My Mind" and "Southern Nights."

A few moments later, he was a celebrity-studded crowd at Staples Center on their feet and singing along, including former Beatle Paul McCartney and guitarist Joe Walsh, who had seen dancing in the aisle with his wife, Marjorie.

Ever the showman, Campbell said his microphone in the room for each chorus, inviting them to join the line, "like a cowboy Rhinestone!" lights and music halls all gladly accepted.

Performance, delivered without a hitch, a hail of applause and ended with applause, as Campbell shouted, "Thank you all so much!" Then he turned to leave the stage as the lights went out and heard gamefully asks: "Where do I go?"

Campbell, a five-time Grammy winner who suffers from short term memory loss over the years identified in the People magazine article in June that he was diagnosed six months before in the early stages of Alzheimer's disease.

His wife, Kim, said that the couple decided to give the public a diagnosis before the final, farewell tour, which he started in the autumn of 2011.

Campbell began as a session guitarist on the Beach Boys and producer Phil Spector, before rising to fame in 1960 of hits, including "Wichita Lineman" and "By the time I get to Phoenix." Perhaps his most famous song, "Cowboy Rhinestone» was the number 1 hit in 1975.

He received his CBS variety show "Glen Campbell Goodtime Hour", from 1969 to 1972, and starred with John Wayne in the 1969 original film version of "True Grit".