His passing cannot come as a surprise, as his dementia made it necessary for him to be replaced, because his demntia made him forget the very songs he co-wrote. A sad day for Rock.
http://www.bbc.com/news/entertainment-arts-42037566
AC/DC guitarist Malcolm Young dies at 64
Australian guitarist and AC/DC co-founder Malcolm Young has died aged 64 after a long battle with dementia.
He died peacefully on Saturday with his family nearby, a statement said. Young will be remembered for his powerful rhythm guitar riffs that were instrumental in propelling the Sydney heavy rock group to stardom. Three Young brothers have been part of AC/DC's history, including lead guitarist Angus. Producer George Young died in October.
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http://www.bbc.com/news/entertainment-arts-42037566