In music, Op. 40 stands for Opus number 40. Compositions that are assigned this number include: * Arnold – Symphony No. 2 * Barber – Antony and Cleopatra * Beethoven – Romance for violin and orchestra no. 1 Op. 40 * Brahms – Horn Trio * Bruch – Hermione * Chopin – Polonaises Op. 40 * Dohnányi – Symphony No. 2 * Dvořák – Nocturne in B major * Elgar – Cockaigne (In London Town) * Erler – Ein Heldenleben * Finzi – Cello Concerto * Holberg – Holberg Suite * Mendelssohn – Piano Concerto No. 2 * Rachmaninoff – Piano Concerto No. 4 * Reger – Zwei Choralphantasien, Op. 40 * Robbins – The Concert * Saint-Saëns – Danse macabre * Schumann – 5 Lieder * Schwabe – Fervaal * Shostakovich – Cello Sonata This disambiguation page lists compositions catalogued to the same opus number. If