Dmitri Shostakovich - Jazz Suite No. 2: VI. Waltz 2 - Part 6/8

Waltz, from Wikipedia:

A waltz, or valse from the French term, is a piece of music in triple meter, most often written in time signature 3/4-beat(help·info) but sometimes in 3/8 or 3/2. Waltzes typically have one chord per measure, and the accompaniment style particularly associated with the waltz is (as seen in the example to the right) to play the root of the chord on the first beat, the upper notes on the second and third beats. This is known as an "oom-pa-pa" beat.

Dmitri Shostakovich, From Wikipedia:

Dmitri Dmitriyevich Shostakovich Russian pronunciation: [dmʲitrij ˌdmʲitrɪjevʲiʨ ʂɨstɐˈkɔvʲɪʨ] (Russian: Дмитрий Дмитриевич Шостакович^[1]; 25 September 1906 – 9 August 1975) was a Soviet Russian composer and one of the most celebrated composers of the 20th century.

Shostakovich achieved fame in the Soviet Union under the patronage of Leon Trotsky's chief of staff Mikhail Tukhachevsky, but later had a complex and difficult relationship with the government. Nevertheless, he also received accolades and state awards and served in theSupreme Soviet of the RSFSR (1947–1962) and the USSR (from 1962 until death).

After a period influenced by Sergei Prokofiev and Igor Stravinsky, Shostakovich developed a hybrid style, as exemplified by Lady Macbeth of the Mtsensk District (1934). This single work juxtaposed a wide variety of trends, including the neo-classical style (showing the influence of Stravinsky) and post-Romanticism (after Gustav Mahler). Sharp contrasts and elements of the grotesque^[2] characterize much of his music.