Whether you know it or not, it's most likely that you have heard this song some time in your life. The song Brazil, which exemplifies the most romantic qualities of Brazilian samba music, was written in 1939 by samba artist Ary Barroso. The song was actually considered a flop until it was used in 1942 by Walt Disney in his Donald Duck-starring movie Saludos Amigos. Since then, the song has been covered by artists ranging from Frank Sinatra to Arcade Fire and has become a staple of the cinema, appearing in movies like Hitchcock's Notorious, Woody Allen's Stardust Memories, and in the trailer for the Pixar film Wall-E.The song has never been used so effectively though as it was at the end of Terry Gilliam's Brazil. The film, which is an ode to George Orwell's dystopian vision of the future in his book 1984, is actually named after the song itself and plays over one of the most depressing endings of any movie in the history of film. Jonathan Pryce's hauntingly bittersweet rendition of the song is delivered as if it was his farewell to existence itself, and as the up-tempo Carnival-esque section of song picks up and we're left with the cold, metallic final image of the film, the contrast is absolutely devastating. In fact, the film's ending was so bleak that it caused a huge rift between Gilliam and the studio, which wanted a happy ending, and it was only thanks to some Los Angeles film critics who had seen and praised the film that Gilliam got his way. As hard as it is to watch, we all owe a debt of gratitude to those critics.