Beethoven's musical style
The compositions that Beethoven wrote in his formative period can be generally characterized by the composer's efforts to master the predominant classical language of the period. His works from this period can be subdivided into two, based on the composer's residence. First, various juvenalia, written when the adolescent Beethoven was in residence in Bonn and heavily indebted to the works of contemporaries, especially Mozart and his teacher, Christian Gottlob Neefe. These early efforts can be seen in a set of three piano sonatas and piano quartets (WoO 36) that Beethoven wrote before 1792. The Quartets, for instance, are each specifically modelled after three Violin sonatas Mozart published in 1781 – K 296, 379 and 380 – and Beethoven would later draw upon this familiarity in the composition of several of his own Violin Sonatas.
Piano Sonata in A minor, D 845 (Schubert)
The Piano Sonata in A minor D.845 (Op.42) by Franz Schubert is a sonata for solo piano. Composed in May 1825 and entitled "Premiere Grande Sonata," it is the first of three sonatas published during the composer's lifetime, the others being D.850 and D.894. Conceived as a set, these works were composed during what was reportedly a period of relatively good health and spirits for Schubert, and are praised for their quality and ambition. This first sonata in particular marks a significant step toward the composer’s mature piano sonata style; the format and several characteristic stylistic elements continue through the last.