How listening to nostalgic music could stave off dementia

In 2020 an incredible video went viral. It featured a former ballet dancer named Marta Cinta González Saldaña, suffering from severe Alzheimer’s disease in her senior years. In the video, Saldaña listens to a piece of music from Tchaikovsky’s Swan Lake and suddenly flashes awake beginning to move to a dance routine she presumably rehearsed over and over in her younger days.