Most of the song in the film is Monroe's own voice and sources differ on how much help she got. AFI, TCM, and a biography of film director Howard Hawks say the only help she got was for the brief high-pitched introduction to the song (usually not included in singles), which was sung by Gloria Wood. However, an article in the New York Times recounting the career of famous ghost singer Marni Nixon claims Nixon dubbed the phrase “These rocks don’t lose their shape.” George Chakiris can be easily spotted as a member of the admiring male chorus.