Family Four Singers
- Vocal group originally consisting of the siblings Berndt, Inger, Siw and Stig Öst. Successful from the mid 1960s to the early 1970s, they won the national contest "Melodifestivalen" twice (1971 and 1972) and subsequently represented Sweden in the Eurovision Song Contest.
Marie Bergman Singer (1969-1973)
Siw Öst Singer (1964-1968)
Pierre Isacsson Singer (1969-1974)
Inger Öst Singer (1964-1969)