Alzheimer’s is one of the cruelest of all diseases, robbing the person of his or her memories and the very essence of their personality.

This story originally appeared on Simplemost.com

There’s currently no way to cure this horrible illness, but one man, Mac McDermott, discovered a way to snap his dad back out of it for precious periods at a time. It seems that when Mac and his father, Simon, go for car rides, they start singing together. This seems to snap his dad Simon back into some semblance of normalcy.

Watch the U.K.-based father and son in action: