Most of Audrey Hepburn's singing was dubbed by Marni Nixon, despite Hepburn's lengthy vocal preparation for the role. A dubber was required because Eliza Doolittle's songs were not transposed down to accommodate Hepburn's "low-mezzo voice" (as Nixon referred to it), the way Guenevere's songs were transposed down to accommodate Vanessa Redgrave's limited vocal range in Camelot (1967). Hepburn sang most of "Just You Wait," as well as the reprise to the song, showcasing her ability to sing perfectly at ease when the songs were set in a reasonable tessitura. Hepburn also sang one or two lines, elsewhere in the score, such as 'Sleep, sleep, I couldn't sleep tonight!' in "I Could Have Danced All Night." Thus, the claim that Nixon dubbed all of Hepburn's singing (as asserted by such people as syndicated columnist Hedda Hopper) is false.

Film

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