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In page Betty Noyes:

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In 1947, she was in a quartet called "The Girlfriends,"[citation needed] a regular feature on several NBC Radio programs, including The Bill Goodwin Show, The Carnation Contented Hour, and with Bing Crosby. Norma Zimmer, Lawrence Welk's "Champagne Lady," was also in the group. Noyes and other members of the quartet became "First Call" studio singers and can be heard on many movie musicals during this period, including The Wizard of Oz (1939) with Judy Garland, White Christmas (1954) with Bing Crosby, and The Sound of Music (1965) with Bill Lee.