Dementia and Music

This story from The National suggests early music education can stave off dementia later in life.  I was curious about this and looked up the following

• CNN article from Sept 2013
• Scholarly article about Swedish twins and this topic
• Music therapy for dementia patients

Joel Osteen mentions in his latest book, Break Out!, that the physical expression of dementia was found in the brains of some people who never exhibited the symptoms of dementia.