I've spent hours trying to find this finnish polka song name and i just fucking can't.

It's a finnish polka with a name that i know starts with 'K' and ends with '-sen polka', i know that because i repeatedly kept mishearing 'senpai' in the lyrics because of the 'sen polka'. It's NOT the Sakkijarven Polka but i just can't fucking find it anywhere.

It's driving me mad.