Celebrities with CNS Diseases: Glen Campbell

American cowboy singer, Glen Campbell, is touring the UK in a farewell tour. He has been diagnosed with Alzheimer's disease.

Here is a commentary from The Independent from the 21st of October:

"Letter from Simon Kelner: A poignant farewell to the Wichita Lineman"

UPDATE: A review of his performance, from The Telegraph: Read the article here.