Breakfast at Tiffany's (film) made capturing the scene a challenge. However, another report claims that the sequence was captured rather quickly due to the good fortune of an unexpected traffic lull. During the film, Hepburn sang the film's signature song, "Moon River" by Henry Mancini and Johnny Mercer. The song was tailored to Hepburn's limited vocal range, based on songs she had performed in 1957's "Funny Face". On the Anniversary Edition DVD of "Breakfast at Tiffany's" co-producer Richard Shepherd says in his audio commentary that after a preview in San Francisco, Martin Rankin, Paramount's head of production, wanted "Moon River" replaced with music by
Audrey Hepburn for the film adaptation, and would have preferred Marilyn Monroe to have been cast in the role, although he also stated that Hepburn "did a terrific job". The character is considered one of the best-known in American cinema, and a defining role for Hepburn. The dress she wears during the opening credits is considered an icon of the twentieth century and perhaps the most famous "little black dress" of all time. Hepburn stated that the role was "the jazziest of my career" yet admitted: "I'm an introvert. Playing the extroverted girl was the hardest thing I ever did." She was