The original artist is Cypis and the name of the song is "Gdzie jest biały węgorz ?" Please go support him for creating this wonderfully addictive and bleak song. This is the full version of the song including parts that aren't in the usual, eddited one hour long version. You can find the corus only version here: https://thunderstore.io/c/lethal-company/p/likesflowers/Polish_Cow_Corus_Only_Song/