Op. 23

In music, Op. 23 stands for Opus number 23. Compositions that are assigned this number include:

• Barber – Medea
• Beethoven – Violin Sonata No. 4
• Chopin – Ballade No. 1
• Dvořák – Piano Quartet No. 1
• Franck – Prélude, Aria et Final
• Gál – Das Lied der Nacht
• Grieg – Morning Mood
• Grieg – Peer Gynt
• Kabalevsky – Piano Concerto No. 2
• MacDowell – Piano Concerto No. 2
• Medea – Medea's Dance of Vengeance
• Myaskovsky – Symphony No. 6
• Rachmaninoff – Preludes, Op. 23
• Sarasate's Spanish Dances, Book III
• Schumann – Nachtstücke
• Scriabin – Piano Sonata No. 3
• Sibelius – Songs for Mixed Chorus from the 1897 Promotional Cantata, song cycle for soloists and mixed choir (arranged 1898)
• Strauss – Macbeth
• Tchaikovsky – Piano Concerto No. 1
• Widor – Surrexit a mortuis
• Wirén – Violin Concerto, for violin and orchestra (1946)