Op. 4
# Op. 4

In music, Op. 4 stands for Opus number 4. Compositions that are assigned this number include:

* Beethoven – String Quintet, Op. 4
* Berg – Altenberg Lieder
* Bliss – String Quartet in A major
* Brahms – Scherzo
* Britten – Simple Symphony
* Chopin – Piano Sonata No. 1
* David – Trombone Concertino
* Dommayer – Gunstwerber
* Dvořák – Symphony No. 2
* Elgar – Idylle
* G. English – Symphony No. 1
* Handel – Organ concertos, Op. 4
* Madetoja – Elegia
* Mendelssohn – Violin Sonata in F minor
* Reger – Sechs Lieder, Op. 4
* Schiele – Verklärte Nacht
* Schumann – Intermezzi
* Schütz – Cantiones sacrae
* Strauss – Kettenbrücke-Walzer
* Stravinsky – Feu d'artifice
* Vivaldi – La stravaganza
* Wieniawski – Polonaise de Concert, Op. 4
* Zandonai – Francesca da Rimini
