Cute chorus

When a friend asked me to send a birthday greeting to her sister, I enlisted the help of a few of my friends.

I've never been able to figure it out, but the people here don't seem to know how to sing "Happy Birthday" (in their own language.)  I don't know if there are several versions or if nobody ever actually learns the words.  Anyway, singing "Happy Birthday" here is usually an interesting experience.  This was no exception.  My favorite part of this particular version is Crístofer's "Amen" at the end.