What is music have to do with the brain and so important to people with dementia?

There is a remarkable book by the late Oliver Sacks MD, called Musicophelia, which describes the importance of music in the life of each human. In fact, it is known that people with dementia who cannot recall the date or time, or fail to recognize their sons and daughters, respond to music. It might be tunes from their era or just songs that everyone knows and sings at parties.