She initially became known to Hollywood casting people from an early marriage to pianist Freddie Slack in the 1940s and later through her long employment with Les Brown and his Band of Renown.
In 1952, Rita Hayworth had returned to Hollywood following the break-up of her marriage to Prince Aly Khan and began work on her "comeback" film, Affair in Trinidad.
Greer's vocals on "Trinidad Lady" and "I've Been Kissed Before" helped the movie become a big box-office hit, even out-grossing Gilda by more than a million dollars.
Greer continued to be in big demand as a dubber, especially at Columbia Pictures, and went on to do the vocal tracks for such stars as Gloria Grahame (in Naked Alibi, Universal-International), Kim Novak (in 5 Against the House), May Wynn (in The Caine Mutiny), Esther Williams (in Jupiter's Darling, MGM), June Allyson (in The Opposite Sex, MGM), and Susan Kohner (in Imitation of Life, Universal-International).
Stoloff also utilized Greer's talents for two projects on the newly formed Colpix Records label, having her record "My Funny Valentine" (he supposedly had never liked the version done by another singer for Kim Novak in Pal Joey), and Hayworth's signature song "Put the Blame on Mame" for the album Voices, Soundtracks and Themes From Great Movies (Greer's name was once more left off both the label and the jacket).
In 1991, while still performing occasionally with the Brown band (now mostly led by Les, Jr.), she was part of a successful cabaret show called Voices,[3] which also featured two other prominent "ghost" singers, Annette Warren and India Adams.