That's pretty amazing if true. The video stops and starts a lot. COULD be faked to some degree. I know dogs have great hearing though, so maybe it's real.

Hmmmmmmmmm?.....or maybe someone is playing piano in back and the dog hits any key?

Well the dog was hitting the right notes, but the camera COULD have been stopped between and restarted after his foot was put in the right place. Or maybe it's real!