This is a list of Mieczysław Weinberg's compositions by opus number. List of works [no opus number]: Two Mazurkas (1933) [no opus number]: Three Pieces for violin and piano (1934) Opus 1: Lullaby for piano (1935) Opus 2: String Quartet No. 1 (1937) [see also Op. 141] Opus 3: String Quartet No. 2 (1940) [see also Op. 145] Opus 4: Acacias, six romances after J. Tuwim for singer and piano (1940) Opus 5: Piano Sonata No. 1 (1940) Opus 6: Symphonic Poem for orchestra (1941) Opus 7: Three Romances after J. Rivina and A. Prokofiev (1941) Opus 8: Piano Sonata No. 2 (1942) [no opus number]: Comrades in Arms, operetta (1942) [no opus number]: Clarettes Career, operetta (1942) Opus 9: Aria for string quartet (1942) [no opus number]: Battle for the Fatherland, ballet (1942) [no opus number]: The Sword of Uzbekistan, opera (1942) Opus 10: Symphony No. 1 (1942) Opus 11: Capriccio for string quartet (1943) Opus 12: Sonata No. 1 for violin and piano (1943) Opus 13: Children's Songs after I.L. Peretz for singer and piano (1943) Opus 14: String Quartet No. 3 (1944) Opus 15: Sonata No. 2 for violin and piano (1944) Opus 16: Children's Notebook No. 1 for piano (1944) Opus 17: Jewish Songs after Shmuel Halkin (1944) Opus 18: Piano Quintet (1944) Opus 19: Children's Notebook No. 2 for piano (1944) Opus 20: String Quartet No. 4 (1945) Opus 21: Sonata No. 1 for cello and piano in C major (1945) Opus 22: Three Romances after A. Mickiewicz for singer and piano (1945) Opus 23: Children's Notebook No. 3 for piano (1945) Opus 24: Piano Trio (1945) [no opus number]: Fantasy on Themes from Adolphe Adam's opera Le chalet for orchestra (1945) Opus 25: Six Romances after F. Tyutchev for singer and piano (1945) Opus 26: Suite for small orchestra (1939–1945) Opus 27: String Quartet No. 5 (1945) Opus 28: Sonata for clarinet (or viola) and piano (1945) Opus 29: Twelve Miniatures for flute and piano (1946) Opus 30: Symphony No. 2 for string orchestra (1946) Opus 31: Piano Sonata No. 3 (1946) Opus 32: Elegy after F. Schiller for baritone and piano (1946) Opus 33: Six Sonettes after W. Shakespeare for bass and piano (1946) Opus 34: Twenty-One Easy Pieces for piano (1946) Opus 35: String Quartet No. 6 (1946) Opus 36: Festive Scenes for orchestra (1946–1947) Opus 37: Sonata No. 3 for violin