While surfing YouTube for ballet music I came across this clip of a long-retired ballerina with Alzheimers. Tears streaming by the end. Music certainly hath charms.
Beautiful. Its amazing how the brain works, even when we think it isn't working much. I've seen a video of a man with severe dementia playing a classical piece on the piano perfectly. Residents in the home my daughter sometimes goes to can remember the words of all the old songs even if they don't know their own name.