Franz Schubert's compositions of 1819 are mostly in the Deutsch catalogue (D) range D 633–678, and include: * Instrumental works: * Trout Quintet, D 667 (year of composition however uncertain) * Piano Sonata in C-sharp minor, D 655 * Piano Sonata in A major, D 664 (or 1825?) * Vocal music: * Mass No. 5, D 678 (first version started in 1819) * Die Zwillingsbrüder, D 647 * "Prometheus", D 674