There are several different versions of this song , but the original is posted above by Meow .

Even Wikipedia has it wrong , in saying that it's two different songs .

It's true that there are two different melodies , the first two being different from the third etc... and it does sound very much like an inverted melody .

If you want to hear part of an excellent rendition of this song by Michael Mitchell , check out this link .

http://www.songsforteaching.com/canada/landofthesilverbirch.htm