Effective period / Period of releases: 1965 - 1995

Members: Pentti Lasanen, Martti Metsäketo, Esa Nieminen, Markku Hannola, Kai Lind, Kai Ruohonen, Esa Laukka

A Finnish vocal quartet, founded in Helsinki. Originally started as Esa Laukan kvartetti in 1958, but the name was changed to Four Cats in 1960. The same year they released their first recording, containing two songs: "Ei koskaan sunnuntaisin" and "Lailaluu".

Current members:
* Pentti Lasanen (1st bass, 1958- )
* Kai Lind (2nd bass, 1960- )
* Martti Metsäketo (1st tenor, 1981- )
* Esa Nieminen (2nd tenor, 1992- )

Former members:
* Esa Laukka (2nd tenor, 1958-1968)
* Kai Ruohonen (1st tenor, 1958-1968)
* Markku Hannola (2nd tenor, -1992)