Bernd Alois Zimmermann (Bliesheim, March 20, 1918 - Grosskönigsdorf, August 10, 1970) is a German composer. He is perhaps best known for his opera Die Soldaten which is regarded as one of the most important operas of the 20th century. As a result of his individual style, it is hard to label his music as avant-garde, serial or postmodern. His music employs a wide range of materials including twelve-tone row and musical quotation. March 20 is the 79th day of the year in the Gregorian Calendar (80th in Leap years). ... 1918 was a common year starting on Tuesday (see link for calendar). ... August 10 is the 222nd day of the year (223rd in leap years) in the Gregorian Calendar. ... 1970 was a common year starting on Thursday. ... A composer is a person who writes music. ... The foyer of Charles Garniers Opéra, Paris, opened 1875 Opera is an art form consisting of a dramatic stage performance set to music. ... A work similar to Marcel Duchamps Fountain Avant garde (written avant-garde) is a French phrase, one of many French phrases used by English speakers. ... Note: This article is about serials in literature and the audio-visual media. ... Postmodernity (also called post-modernity or the postmodern condition) is a term used by philosophers, social scientists, art critics and social critics to refer to aspects of contemporary art, culture, economics and social conditions that are the result of the unique features of late 20th century and early 21st century...