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 No. 16 (Beethoven)
Due to his dissatisfaction with the classical style of music, Beethoven pledged to take a new path of musical composition and style. The Opus 31 works are the first examples of Beethoven's new and unconventional ideas, an attempt to make a name for himself in the annals of music history. For example, the first movement, unlike most sonata allegro forms, which the second theme of the exposition is dominant, the second theme is in B major and B minor, the mediant of the original key. Beethoven would later continue to use the mediant and submediant as expositional goals for major-key sonata-form movements, such as the first movements of the Waldstein and Hammerklavier sonatas, the Archduke trio, the triple concerto and the thirteenth string quartet, as well as the finale to the seventh symphony. It is important to take into account that these pieces were written after the famous Heiligenstadt Testament of 1802.