Ievan Polkka

"Ievan Polkka" or "Ievan Polokka" (Savo Finnish for "Eva's Polka") is a popular Finnish song with lyrics written in the early 1930s by Eino Kettunen to a traditional Finnish polka tune. The name is commonly misspelled Levan polkka, due to the similarity of lower-case L and upper-case i in sans-serif fonts. It is also known as "Loituma's Polka" (or "Loituma's Polkka").

https://en.wikipedia.org/wiki/Ievan_Polkka