Man with Alzheimer’s ‘comes back’ during duets with son, videos go viral

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Mac McDermott has become a viral sensation while raising money for the Alzheimer's Society.

He says father who has the disease "comes back" when they sing together. Back in the day, Mac's father was credited with the nickname "The Songaminute Man" for knowing a variety a songs as a singer in the Butlin's Redcoat group.

You can follow the the The Songaminute Man on Facebook as well as donate to the cause here.