Algodoo

Includes Miku, Kaito, and Luka.

The original version, I believe was in Finnish:

http://www.youtube.com/watch?v=4om1rQKPijI

But then the song was attempted by the software: Vocaloid by the Japanese company Crypton Future Media. Vocaloid is voice synthesizing application based on voice samples of real Japanese singers.

http://en.wikipedia.org/wiki/Vocaloid

The most popular version is by Hatsune Miku:

http://www.youtube.com/watch?v=kbbA9BhCTko

But my personal favourite is by the somewhat less popular, but in my opinion way better sounding Kagamine Rin:

http://www.youtube.com/watch?v=mq-HMyxXMqM

(i would have included Rin, but the chibi look does not suit her. the wideness and the short shirt do not mix well XP)