Requiem

Requiem (Grande Messe des morts) is a large-scale choral and orchestral work by French composer Hector Berlioz, completed in 1837. It calls for vastly expanded forces, including multiple brass choirs, augmented percussion and large choirs, producing immense dynamic contrasts and novel orchestral textures that exemplify Berlioz's unconventional approach to instrumentation and occupy a notable place in the development of nineteenth-century orchestration.