Alzheimer’s Society is running a very sympathetic nationwide campaign, "Singing for the Brain" as a group activity carefully made for people with memory loss to receive the many health benefits connected to the joy of singing.
At 30 different locations the scheme aims at boosting confidence, self-esteem and general quality of life by involving people with dementia in interactive sing-song sessions.
Singing for the Brain was recently featured in a BBC Radio 4 documentary looking into the emotional significance of Handel's Hallelujah Chrous, available to listen to here.
Or have a look at the different YouTube sessions.
Also, if interested in the link between alcohol and dementia, check out this blog post by Ollie Clark.