In music, Op. 20 stands for Opus number 20. Compositions that are assigned this number include:

• Barber – Excursions
• Bartók – Eight Improvisations on Hungarian Peasant Songs
• Beethoven – Septet
• Britten – Sinfonia da Requiem
• Chausson – Symphony in B-flat
• Chopin – Scherzo No. 1
• Dvořák – Moravian Duets
• Elgar – Serenade for Strings
• Haydn – String Quartets, Op. 20
• Hindemith – Das Nusch-Nuschi
• Knussen – Where the Wild Things Are
• Korngold – Das Wunder der Heliane
• Larsson – Intimate Miniatures (Intima miniatyrer), a suite for string quartet (1938)
• Matthay – Piano Quartet
• Mendelssohn – Octet
• Prokofiev – Scythian Suite
• Rachmaninoff – Spring
• Ries – Cello Sonata No. 2
• Saint-Saëns - Violin Concerto No. 1
• Sarasate – Zigeunerweisen
• Schoenberg – Herzgewächse
• Schumann – Humoreske
• Scriabin – Piano Concerto
• Shostakovich – Symphony No. 3
• Sibelius – Malinconia, duo for cello and piano (1900)
• Strauss – Don Juan
• Tchaikovsky – Swan Lake
• Wirén – Symphony No. 3 (1944)
• Zemlinsky – Symphonische Gesänge

Topics referred to by the same term

This disambiguation page lists compositions catalogued to the same opus number.
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