In music, Op. 56 stands for Opus number 56. Compositions that are assigned this number include:
Beethoven – Triple Concerto Brahms – Variations on a Theme by Haydn Chopin – Mazurkas, Op. 56 Fauré – Dolly Goltzius – Frühlingsfeier Mendelssohn – Symphony No. 3 Prokofiev – Sonata for Two Violins Schumann – Studies in the Form of Canons for Organ or Pedal Piano (Etuden in kanonischer Form für Orgel oder Pedalklavier) Sibelius – String Quartet in D minor, (1909) Tchaikovsky – Concert Fantasia