Dementia.

Visiting a friend in a Care Home. The lady sat next to him was asleep all the time but her husband visits every day. When he's not there, she's very disturbed. He showed me this and says it helps him cope with the situation. Beautiful surroundings, all the sitting rooms are light and the staff are very attentive. One of them burst into song (beautiful voice) when my husband remarked on a small study about singing and health which showed "Amazing Grace" was apparently the song that was the most beneficial for people's health.