As early as 1944, Crowley was singing in clubs at hotels. An audition with the
Theatre Guild in 1945 led to her becoming a member of the cast of
Oklahoma! on Broadway. On September 1, 1946, she was designated the understudy for
Betty Jane Watson, who portrayed Laurey. When Watson had laryngitis on October 4, 1946, Crowley took her place in the show's matinee and evening presentations. Her performances gained attention, including a feature article in the next day's issue of
The New York Times. Crowley's other Broadway credits included
Carousel (1945), for which she won a 1947
Theatre World Award as a replacement player, and the starring roles of Jennifer in
Paint Your Wagon (1951) and Lola in
Seventeen (1952), which she originated. She portrayed Laurey in a production of
Oklahoma! in London in 1948. The musical ran for five months, and Crowley's performances were interrupted by surgery for appendicitis. She also toured in the US as Laurey and also as Carrie Pipperidge in
Carousel (1947). Her regional theatre roles included Looloo Martin in a 1950 production of
Hit the Deck at St. John Terrell's Music Circus in
Lambertville, New Jersey. Her work on television included "Cinderella '53", a one-hour musical broadcast on
Studio One on December 21, 1953, as well as
Schlitz Playhouse and
Musical Comedy Time. In May 1955, Crowley headed the entertainment program in the Statler Terrace Room in Los Angeles. ==Lawsuit==