大象传媒

Erin Solari posted a video of her grandfather singing to his dying wife of 73 years. It's been viewed more than 3.5 million times, with many people thanking Erin for sharing the special moment.

Erin told Outside Source how happy she was to share her amazing grandparents and how touched she was with the response from around the world.

You can watch the original video here: http://bbc.in/1JteCem