Dmitry Shostakovich was a Russian composer whose symphonies and quartets, numbering 15 each, are among the greatest examples from the 20th century of these classic forms. His style evolved from the brash humor and experimental character of his first period, exemplified by the operas The Nose and Lady Macbeth of Mtsensk, into both the more introverted melancholy and nationalistic fervor of his second phase (the Symphonies No. 5 and No. 7, "Leningrad"), and finally into the defiant and bleak mood of his last period (exemplified by the Symphony No. 14 and Quartet No. 15). Early i...