Marche Slave, Op. 31, (French: “Slavonic March”) orchestral composition by Pyotr Tchaikovsky, first performed in Moscow in November 1876. It is a rousing patriotic work based on Serbian and Russian folk themes.

Tchaikovsky was commissioned to write the piece specifically for a concert to benefit Serb soldiers wounded while fighting (with help from Russian volunteers) against the Ottoman Empire. Hence the title declared it a march for all Slavs rather than simply for Russians. The piece, though relatively brief, includes a number of distinct moods; bright, festive passages contrast with ominous ones. At several moments, different sections of the orchestra carry their own melodies at the same time, creating a layered effect. As the march progresses toward its triumphant conclusion, the intensity of the music builds, and the main theme is gradually shifted from the woodwinds and strings to the brass and percussion.

_{Source: Schwarm, Betsy. "Marche Slave, Op. 31". Encyclopedia Britannica, 30 May. 2016, https://www.britannica.com/topic/Marche-Slave-Op-31.}