Ievan Polkka

Ievan Polkka is the Hatsune Miku's debuting song. In episode 4, Miku was seen singing Ievan Polkka while twirling a leek around. Kaito approaches her with a video camera in hand and captured the moment. Toshiro Yamada suggests that they put it up on "MeTube" and so the Hatsune Miku's popularity sky-rocketed. Kiyoteru Hiyama even questioned if the song is sung in a real language. Ievan Polkka is a Finnish polka originally. On PrincessDevin302's channel, she released a full cover of it.