Marlowe worked with Frank Parker ("Moonlight and Roses") and was married to the television producer Larry Puck.

[3] According to Richard Lamparksi's 1975 book Whatever Became of...?, Marlowe began taking vocal lessons when she was 12 years old and studied at London's Royal Conservatory under Sir Thomas Beecham.

Marlowe is best known for her performances on the television variety series Arthur Godfrey and His Friends from 1950 to 1955, in which she sang duets with Frank Parker as the "Jeanette MacDonald and Nelson Eddy of the 1950s.

"[4] In April 1955, she was dropped from CBS's roster, and the same month she was fired by Arthur Godfrey from his show along with fellow cast members Haleloke and the Mariners.

[9] Marlowe later pursued a career as a stage actress, most notably as the Baroness, Elsa Schraeder, in the original production of The Sound of Music, from 1959 to 1963.