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. 3 (Beethoven)
The first movement follows the sonata allegro format of the classical period, and borrows thematically from Beethoven's Piano Quartet No. 3 in C major, WoO 36, from a decade earlier. The movement opens with the main theme in the tonic key, beginning with a double-thirds trill-like pattern. This opening passage is infamous for pianists to play, and Arthur Rubinstein even used this passage to test pianos before performing on them. This pattern leads into an energetic outburst of a broken-chord and broken-octave section. The second theme of the exposition begins in the key of G minor, and is repeated in D minor at measure 33. It is not until measure 47 that the traditional dominant key is finally reached, where a subsidiary theme in the second thematic group appears, marked "dolce." A forte shows later, leading to a very rich melody with left and right hand. Then a similar outburst of a broken-chord and broken-octave sections appears in fortissimo. Then it ends with some difficult trills and an octave scale. Beethoven opens the development by improvising on trill patterns introduced in the end of the exposition, which are much more difficult to play. Following a broken-chords section filled with harmony changes, the main theme is restated in D major (pianissimo), the supertonic key of C major. Then a fortissimo and Beethoven's very common syncopations appears in the music giving a rhythm, this continues on to the resolution. The recapitulation is a key change from G major to C major, which is finished by a cadenza, which begins with a sudden A-flat major chord. The cadenza is very light and vibrant and it ends with a long trill and descending chromatic scale in the right hand. The first movement is about 10 minutes long and is one of Beethoven's longest movements from his early period.