And it really ticks me off.

But I can go out there and play guitar.

He can say that again.

The 54th Annual GRAMMY Awards - Show

Credit: John Shearer/WireImage

Campbell began to notice lapses in his memory while recordingGhostlast year.

That voice of his and that guitar of his, those are gifts that nobody has.

Indeed, while he may not be able to remember the wordAlzheimers, Campbell remains a musical perfectionist.

Hes a real fanatical guy regarding lyrics and rhythm, saysGhostproducer Julian Raymond.

Its gotta be faster, I dont like that lyric.

He knows what he wants.

His soaring tenor and showy guitar licks havent faded either.

Theres a magical thing that happens when he walks on stage, Kim says.

All of a sudden its likebam, hes Glen Campbell, and it kicks in.

I dont know if its muscle memory, but its just natural to him.

Still, hell have a teleprompter on tour for those moments when lyrics escape him.

Theyre not perfect shows, says Kim.

Theres a few mess-ups here and there.

But as he prepares to bid his fans farewell, he finally seems at peace.

God gives everybody a chance, he says.

It took me a long time to pick up on that.

Ive just been blessed I dont know what else I can say.