<P> "Du, du liegst mir im Herzen" ("You, you are in my heart") is a German folk song, believed to have originated in northern Germany around 1820 . Bavarian flautist Theobald Boehm, inventor of the fingering system for the modern flute, composed a theme and variations for flute and piano on this tune . </P> <P> The song is heard in the 1961 film Judgment at Nuremberg during a key scene between Spencer Tracy and Marlene Dietrich . In 1974's Blazing Saddles, Madeline Kahn, caricaturing Dietrich, sings it with a group of Prussian soldiers . It also features in Top Secret!, The Winds of War, Le Silence de la mer, the Barbara Stanwyck film Ever in My Heart and in Alfred Hitchcock's Lifeboat, sung by Walter Slezak . It was sung by the Kenneth Mars character, Franz Liebkind, in The Producers . In the 1991 movie, What About Bob?, a gleeful Richard Dreyfuss whistles the melody of the chorus . </P>

German song du du liegst mir im herzen