In music, Op. 30 stands for Opus number 30. Compositions that are assigned this number include:
Beethoven – Violin Sonata No. 6 Beethoven – Violin Sonata No. 7 Beethoven – Violin Sonata No. 8 Boccherini – Musica notturna delle strade di Madrid Braunfels – Die Vögel Chopin – Mazurkas, Op. 30 Coleridge-Taylor – The Song of Hiawatha Enescu – Piano Quartet No. 2 Farrenc – Piano Quintet No. 1 Górecki – Two Sacred Songs, Op. 30 Hanson – Symphony No. 2 Mendelssohn - Songs without Words, Book II Myaskovsky – Symphony No. 10 Rachmaninoff – Piano Concerto No. 3 Reizenstein – Anna Kraus Rimsky-Korsakov – Piano Concerto Saint-Saëns – La princesse jaune Schumann – 3 Gedichte Scriabin – Piano Sonata No. 4 Sibelius – The Breaking of the Ice on the Oulu River (), melodrama for narrator, male choir, and orchestra (1899) Strauss – Also sprach Zarathustra Tchaikovsky – String Quartet No. 3