I just watched a documentary and I found out why. The documentary is introducing music through personal headphones and ipods to people with Alzheimer's and dementia, showing that they come alive, and their memories, at least temporarily, return, and with it their sense of being a person, and joy.
I live in silence... and dance at the exercise class. I don't have a radio, don't have a TV, so I don't listen to music, but when I accidentally do... I party. I celebrate... OK, too much information? ok... I shut up.