She has recorded numerous best-selling albums in German (for the German
and Austrian market), Danish, Swedish, as well as her native Norwegian.
Has been on tour (Gitte Wencke Siw) together with Danish Gitte Hænning and
Swedish Siw Malmkvist since 2004. Wencke sang the Norwegian version of
Gitte's hit "Ich will 'nen Cowboy als Mann" (I want a cowboy for
husband) in 1963.
Her 1970 hit "Er hat ein knallrotes Gummiboot" (He has a bright red
rubber boat) became popular in Germany again during the Easy Listening
wave in the 1990s.
The singing voice of Bianca in the German dub of 'The Rescuers', she is the last surviving cast member of that dub.
Children: Kim (b. 16 May 1971), Dan (b. 23 October 1973), and Fam (b. 17 April 1975) with her first husband Torben Friis-Møller; and Michael Jr. (b. 6 April 1982) with her second husband Michael Pleffgar.