Op. 45
# Op. 45

In music, Op. 45 stands for Opus number 45. Compositions that are assigned this number include:

* Beach – Piano Concerto
* Berkeley – A Dinner Engagement
* Brahms – A German Requiem
* Britten – The Little Sweep
* Chopin – Prelude No. 25
* Fauré – Piano Quartet No. 2
* Grieg – Violin Sonata No. 3
* Kabalevsky – Piano Sonata No. 2
* Liebermann – The Picture of Dorian Gray
* Madetoja – The Ostrobothnians
* Mendelssohn – Cello Sonata No. 1
* Rachmaninoff – Symphonic Dances
* Rautavaara – Piano Concerto No. 1
* Saint-Saëns – Le Déluge
* Schumann – Romanzen & Balladen volume I (3 songs)
* Sibelius – The Dryad
* Tamberg – Cyrano de Bergerac
* Tchaikovsky – Capriccio Italien
