Dmitri Dmitriyevich Shostakovich (Russian: Дми́трий Дми́триевич Шостако́вич, tr. Dmitriy Dmitrievich Shostakovich, Russian: [ˈdmʲitrʲɪj ˈdmʲitrʲɪjɪvʲɪtɕ ʂəstɐˈkovʲɪtɕ] (listen); 25 September [O.S. 12 September] 1906 – 9 August 1975) was a Soviet composer and pianist. He is regarded as one of the major composers of the 20th century, with a unique harmonic language and a historic importance due to his years of work under Stalin.Shostakovich achieved fame in the Soviet Union under the patronage of the Soviet chief of staff Mikhail Tukhachevsky, but later had a complex and difficult relationship with the government. Nevertheless, he received accolades and state awards and served in the Supreme Soviet of the RSFSR (1947) and the Supreme Soviet of the Soviet Union (from 1962 until his death). A polystylist, Shostakovich developed a hybrid voice, combining a variety of different musical techniques into his works. His music is characterized by sharp contrasts, elements of the grotesque, and ambivalent tonality; he was also heavily influenced by the neoclassical style pioneered by Igor Stravinsky, and (especially in his symphonies) by the late Romanticism of Gustav Mahler. Shostakovich's orchestral works include 15 symphonies and six concerti. His chamber output includes 15 string quartets, a piano quintet, two piano trios, and two pieces for string octet. His solo piano works include two sonatas, an early set of preludes, and a later set of 24 preludes and fugues. Other works include three operas, several song cycles, ballets, and a substantial quantity of film music; especially well known is the "Waltz No. 2" from the Suite for Variety Orchestra, as well as the suite of music extracted from The Gadfly.