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 by UNICEF." Hepburn toured Central America in February 1989, and met with leaders in Honduras, El Salvador, and Guatemala. In April, she visited Sudan with Wolders as part of a mission called "Operation Lifeline". Because of civil war, food from aid agencies had been cut off. The mission was to ferry food to southern Sudan. Hepburn said, "I saw but one glaring truth: These are not natural disasters but man-made tragedies for which there is only one man-made solution – peace." In October 1989, Hepburn and Wolders went to Bangladesh. John Isaac, a UN photographer, said, "Often the kids would