81-year-old Paul Harvey lives with dementia. Yet, he possesses a particular proclivity for music. By accident, his son gave Harvey four random notes to which he composed a song. That song, called "Four Notes," became a hit and soon made it onto the list of the top 40 hit singles. What is more is the song raised millions of dollars for the Alzheimer's Society and Music for Dementia. And, through Music for Dementia, Paul was given an opportunity to perform with one of the world's most famous orchestras, the BBC Philharmonic Orchestra. "It was such a thrill to be in front of a wonderful orchestra and to actually conduct them, it was 'Wow,'" said Harvey.