Hi, Lily. This is an interesting idea. Memory is very important for the family to remember dying people's existence. I believe those people who are lying in the bed want to leave the best impressions and appearances. Death is sentimental for each person whether dying or accompanying with dying people's bed. Recording the last time with them by music, images could evoke previous memories.
Do you believe ghosts? Do you believe the illusion of dying? Actually in my hometown people always believe the existence of ghosts and gods. There are two kinds of people will easily induce the nonphysical existence: kids who are under 8 and dying people. These are real? How can prove? We just learn from their experience they talked to us. Perhaps the experience in our last life will proof whether it is true.