. ♪ >> the woman at the piano is a 78-year-old, janet quinn. she had advanced alzheimers. she can't remember her late husband. he can't remember the names of kids or family members. but, there are some things that the heart and fingertips never forget. ♪ >> she has this piano for what? 35 years? >> crazy. >> beautiful. >> i know. >> never had lessons. >> the people around her are amazed at how great she can still play. >> you can see her granddaughter helps her out a little bit. ♪ >> she can't play off of it, but you can see why everybody is so amazed. >> alzheimers is such a debilitating disease. to sit and do this, it has to make her feel good. there's a reason medical professionals use music for therapy. >>> how fast can you clap? >> nowhere near as fast as this dude. >> how many claps does it take a break a record in one minute? take your guess. >> start the clock. >>> lots of cool comes at 1500. studios put a cool video together. >> oh, wow. they are doing all kind of stuff. spilling coffee. that girl had cinnamon in her mouth. a bunch of people participated. it's