Holy moley, this is an amazing piece of history that I adore. My parents got one of the very few VHS copies in the 80s and we played it till it wore out. I ended up having to get a copy on a torrent site in 2006 to show it to my husband. My mom and I still occasionally sing the copyright free birthday song from this movie.

Happy birthday to you, Happy birthday to you. May all your great dreams and small wishes come true! May every day bring you its own special cheer, The gift of our friendship good fortune this year!

(Lyrics corrections by people with better memories can be posted below.)