Simon "Mac" McDermott and his 80-year-old father Ted are going viral with an extremely lovable video of the two English men singing the Italian pop hit "Quando Quando Quando" in a car. But unlike most carpool karaoke videos, this one benefits a very important cause.

For decades, Ted was a touring singer who was known in the nightclubs as the Songaminute Man for the number of songs he could recall at a moment's notice. Sadly, in recent years Ted has been afflicted with Alzheimer's disease, and his memory of his family and past is increasingly fragmented. Simon writes: