This supplement to the Deutsches Theater-Lexikon [German Lexicon of Theater], which was completed in 2011, amplifies and extends Volumes I-IV (A-T), which first appeared between 1953 and 1998. Articles have been re-edited and expanded with an emphasis on the 20th century, and personalities from the world of German-language theater who were not previously included have been newly added. The lexicon contains bio-bibliographic information about playwrights, composers, theatrical directors, producers, actors, singers, set designers, and costume designers.