The Discreet Charm of the Bourgeoisie is a 1972 French-language surrealist black comedy film directed by Luis Buñuel, who wrote the screenplay in collaboration with Jean-Claude Carrière. From Wikipedia
Sondheim's unfinished masterpiece integrates two classic Luis Buñuel films into a musical satire, ending unfinished with dialog in the second act as a result of Sondheim's passing.
