Op. 91

In music, Op. 91 stands for Opus number 91. Compositions that are assigned this number include:

Beethoven – Wellington's Victory Brahms – Two Songs for Voice, Viola and Piano Britten – Sacred and Profane Delius – Two Songs to be sung of a summer night on the water Dvořák – In Nature's Realm Glière – Horn Concerto Margola – Cello Concerto Schumann – Romanzen volume II (6 partsongs for women's voices) Sibelius – Jäger March (), military march for male choir and orchestra (1917)