Piano Sonata No.2 in F major, KV 280

The first movement of the sonata is in sonata form, and thus has an exposition of three themes of new material, a development, in which the themes from the exposition are varied and combined, and a recapitulation, in which the exposition is repeated and varied. The sonata begins with the first theme of the exposition, which itself begins with a forte arpeggiated chord, followed by three thirds. The theme next contains a series of falling quarter notes over block chords and Alberti bass, rapid sixteenth notes, and falling fifths. The second theme consists of legato triplets in the right hand over octaves in the left. The theme is somewhat chromatic, with frequent accidentals. The third theme is mostly quarter and eighth notes with an irregular accompaniment. The exposition ends with a C major chord. The development and recapitulation follow, varying and combing these themes before restating them, as is normal in sonata form.