Wozzeck

Description of Berg's Wozzeck from the Metropolitan Opera's website:

One of the emblematic achievements of the thriving artistic forces in Germany and Austria during the brief period between world wars, Wozzeck was a sensation and a scandal at its premiere. Remarkably, it has lost none of its power to fascinate, shock, and engage audiences, and its status as one of the defining musical works of the 20th century has not blunted its vitality.