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
Moon River that it has been used as a test sample in a study on people's memories of popular songs. Comments about the lyrics have noted that they are particularly reminiscent of Mercer's youth in the Southern United States and his longing to expand his horizons. Robert Wright wrote in "The Atlantic Monthly", "This is a love sung to wanderlust. Or a romantic song in which the romantic partner is the idea of romance." An inlet near Savannah, Georgia, Johnny Mercer's hometown, was named Moon River in honor of him and this song. Mercer and Mancini wrote the song for Audrey Hepburn