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 in the West End musical theatre revues "High Button Shoes" (1948) at the London Hippodrome, and Cecil Landeau's "Sauce Tartare" (1949) and "Sauce Piquante" (1950) at the Cambridge Theatre. During her theatrical work, she took elocution lessons with actor Felix Aylmer to develop her voice. After being spotted by a casting director while performing in "Sauce Piquante", Hepburn was registered as a freelance actress with the Associated British Picture Corporation. She appeared in the BBC Teleplay "The Silent Village", and in minor roles in the 1951 films "One Wild Oat", "Laughter in Paradise", "Young Wives' Tale", and "The Lavender Hill