Music's ability to soothe the symptoms of dementia and Alzheimer's has been known for years. Now, a new BBC website aims to help by connecting dementia patients with the songs they love. Eventually, it's hoped the site will build a database of music that's effective at triggering memories. "Music can have such a powerful effect," said Snow Patrol star Gary Lightbody, whose father suffers from dementia. "It fires all sorts of things in the brain much more immediately than anything else can, whether it be pictures or old home movies or conversations.