Or 'Der Kleine Eskimo' if you're ~KatsumeBlisk
Or leekspin if you're the internet.
It's a Finnish folk song that became a meme.
I chose a vocaloid version, because it was the easiest to grab ahold of an mp3. I could've done more more tracks, but I didn't want it becoming jumbled, as it's nothing more than a simple, albeit crazy catchy, tune.
MP3 and TABs I made are on my dropbox. [link]
Guitar Cover © ReyTiger
Ievan Polkka © Loituma